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How to repair Excel file online?

Updated: 2026-10-16

Victor Bobrov Written by: Victor Bobrov

If you have a damaged Excel file with valuable data, upload the document to our service and make just one click to preview recoverable data. Our MS Excel XLSX repair service will find and restore the maximum of data and will save the allegedly lost information to a new Excel file.

This corrupt Excel recovery online service will help you restore the following types of data from a damaged file:

  • Cell data;
  • Fonts;
  • All formulas, including functions, links to named ranges, other sheets and files;
  • Cell formatting (font, number format, borders and filling, orientations and text alignment);
  • Style tables;
  • Number formats (except for color formatting);
  • Sheets;
  • Column width and row height;
  • Cell color;
  • Cell border color;

Extensions of recoverable file types: xls, xlt, xlsx, xlsm, xltm, xltx, xlam.

All recovered data, cell values, worksheet values, tables, text, images, formatting, layouts, references, and other elements of Excel spreadsheets will be saved to a file with the .XLSX extension in accordance with the ECMA-376 - Office Open XML file formats.

The process of recovering damaged Excel workbooks online involves scanning the ZIP container for the XLSX file component by component and extracting undamaged fragments of tables, worksheets, workbooks, and other elements while bypassing the damaged XML tags. Missing or incorrect XML tags and objects are corrected contextually based on the table structure. For .XLS files in the Excel 97-2002 format, all data streams present in the file are analyzed. Data streams are grouped, corrected, and missing data is inserted using complex recovery algorithms.

How to repair Excel file online?
pst repair

Repair Excel File from corrupted and inoperable Outlook Personal Store Table.

If many Excel files were stored in Outlook and the email program stopped working due to Personal Store Table corruption, then use Recovery Toolbox for Outlook. Recovery Toolbox for Outlook will repair the PST file and then you can save the Excel file. If the Excel file remains corrupted, then you should use the current online service to repair corrupted Excel spreadsheets. But usually you don't need to use the online service anymore.

How to repair Excel file

The repairing of corrupted Excel workbooks and worksheets in few clicks:

  1. Select or drag&drop corrupted Excel file
  2. Upload file for recovery to the repair server
  3. Wait for the end of recovery process
  4. Preview of repaired data if the repair process was success
  5. Download DEMO of repaired file
  6. Download recovered Excel (.xlsx) file

How to repair corrupted Microsoft Excel file online?

If you don't have a backup copy of a damaged Microsoft Excel XLSX/XLS file, just upload it to the service with one click and find out how you can save the data. Unfortunately, we cannot recover some information from Excel files, for example:

  • Print settings;
  • Conditional formatting;
  • Data input validation rules;
  • Protection of ranges, sheets and file in general;
  • Sound blocks for Asian texts;
  • Hyperlinks;
  • Formula calculation parameters;
  • Sorting parameters;
  • Embedded objects, such as images, charts, notes and such;
  • Merged cells;
  • Comments;
  • VBA macros.

How to fix a corrupted XLS file of an earlier version of Microsoft Excel

Our Microsoft Excel repair files service will help restore Excel files of earlier versions, such as Microsoft Excel 97, 98, 2000, XP, 2003. Apart from this, the service will help fix the following errors in files:

  • We found a problem with some content in 'FileName.xlsx (xls)'.Do you want us to try to recover as much as we can? If you trust the source of this workbook, Click Yes
  • Filename.xlsx cannot be accessed. The file may be read-only, or you may be trying to access a read-only location. Or, the server the document is stored on may not be responding.
  • Excel cannot complete this task with available resources
  • This file is not in a recognizable format.
  • Excel found unreadable content in filename.xlsx.
  • File format not valid
  • Microsoft Excel has encountered a problem and needs to close.
  • Unexpected error
  • Excel unable to read file
  • Cannot access read-only document
  • The document Filename caused a serious error the last time it was opened
  • Cannot open .xls file
  • This file is not in a recognizable format.
  • The file is corrupt and cannot be opened
  • Excel error "cannot open file because the file format or file extension is not valid."
  • Excel cannot open the file .xlsx because the file format or file extension is not valid.
  • Error 1004
  • Error 13
  • Error 91
  • File in Use" error opening Excel 2007 Files.
  • .xls file format is not valid

Notes:

  • This corrupt Excel file repair online service does not restore password-protected workbooks and worksheets;
  • If file data is protected with a password or encrypted, its recovery is impossible.

The extensions of recovered files: xls, xlt, xlsx, xlsm, xltm, xltx, xlam. The Online Service and Excel Repair Kit repairs Excel files of old versions (xls, xlt) of Excel 98 / 2000 / XP / 2003 versions and new versions (xlsx, xltx) of Microsoft Excel 2007 / 2010 / 2013 / 2016 / 2019 / 2021 / 2024 and Excel for Microsoft 365.

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Online Excel File Repair Questions and Answers

Excel workbook will not open after the laptop battery dies.

Question:

I was tracking our family budget in an XLSX file in Microsoft Excel 2024 on a Windows 11 laptop when the battery died right in the middle of a save. After I plugged the laptop back in, the workbook would no longer open, even though its filename and size were unchanged. I don't have a backup, and the spreadsheet won't load on my Android 14 phone either. How to repair an Excel file online without reentering six months of expenses?

Answer:

Excel may have written only part of the updated workbook before the power cut out, so seeing the file in its folder doesn't mean its structure is intact. How to repair an Excel file online after an interrupted save: first, make a separate copy of the damaged XLSX file and check whether Excel offers an AutoRecovered version. If there's no usable version, open Online Excel Repair Service on your laptop or phone, select the copy, and wait for the upload and recovery to finish.

Look for the most recent months in the preview screenshots. In the DEMO file, check the number of recovered worksheets, the expense cells, and any surviving formatting. The service saves the extracted data to a new XLSX file, but it can't recover changes that never made it to disk. Some formatting may be missing, so compare the monthly totals against your statements before using the result.

Windows reboot interrupted an Excel file save.

Question:

I was editing payroll in an XLSM file in Microsoft Excel 2021 on my Windows 10 work PC when Windows unexpectedly rebooted to install updates. The file was still saving, and now I get “The file is corrupt and cannot be opened.” when I try to open it. Could Corrupted Excel repair online help me get the employee totals back quickly if I can rebuild the macros later?

Answer:

The reboot may have interrupted writes to parts of the XLSM file, leaving inconsistent data inside the workbook. Corrupted Excel repair online is worth trying here to extract the payroll tables, even if the automation no longer works. Copy the original Excel file under a different name, then upload it to Excel Online Repair Service using a browser on your Windows PC or another available device.

Once the upload and recovery finish, a preview of the recovered data will open. Download the DEMO version from the preview page to check the worksheet count, employee rows, calculation cells, and currency formatting. Compare the totals with the previous month and make sure the latest payroll entries are present. Recovered data is saved to an XLSX file without VBA macros or password protection, and some formatting may be missing. After checking the spreadsheet itself, you'll need to bring working macros over separately from a good copy.

Excel crashed while saving a report.

Question:

I was putting together a large XLSX report in Microsoft Excel 2016 on a Windows 10 laptop when “Excel cannot complete this task with available resources.” popped up during a save, and Excel crashed. Other workbooks are still open, but this report hangs even after I reboot the laptop. Could Corrupted Excel file repair online help if closing other apps no longer fixes the problem?

Answer:

The resource warning can mean the system is running low on memory, but a crash during a save can also create an incomplete file. First, restart Excel and try opening a copy of the report with other resource-heavy apps closed to rule out a PC issue versus workbook corruption. If only this document still fails, try Corrupted Excel file repair online at Online Excel Fix Service by uploading the original copy through your browser.

Recovery runs on the service's servers, so you can also upload from an Android tablet if the file is stored on it. Wait for the repair to finish, check the table layout in the screenshots, and use the DEMO file to review the recovered worksheet count, key cells, and formatting. The output is an XLSX file. Password protection, VBA code, and some visual elements won't carry over. Before getting back to work, compare recovered totals and formulas with known check values.

The drive ran out of space while saving an Excel workbook.

Question:

I use Excel for Microsoft 365 on a MacBook running macOS 14, and I keep my order log in an XLSX file. My SSD ran out of space during a save, and now the workbook shows “Excel found unreadable content in filename.xlsx.” when I open it, even though I've already deleted some videos to free up space. How do I repair Excel online and get back this specific file with my list of paid orders?

Answer:

Freeing up space lets you save files again, but it doesn't fix an XLSX file that was only partly written. How to repair Excel online after running out of disk space: keep a separate copy of the damaged workbook and upload it to Online Excel Recovery Service in your MacBook's browser. If the laptop is still busy with disk cleanup, you can upload an available copy from an iPhone or tablet.

After analysis, review the screenshots of the recovered tables and download the DEMO file to check the worksheet count, row order, and formatting in the payment columns. Pay particular attention to entries made just before the low-disk-space warning: they may never have been saved. The service exports available data to an XLSX file without restoring password protection or VBA macros, and some formatting may be lost. Save the verified result to a drive with plenty of free space and keep the original damaged copy separately.

Saving an Excel spreadsheet to network storage failed.

Question:

I connected from my laptop to an office PC running Windows 11 over RDP and saved an XLSX file from Microsoft Excel 2019 to a network folder on a RAID-backed NAS. During the save, the NAS reported a disk error, and then Excel displayed “Filename.xlsx cannot be accessed. The file may be read-only, or you may be trying to access a read-only location. Or the server the document is stored on may not be responding.” The admin restored access to the folder, but my local copy of the report still won't open. How do I recover a corrupted Excel file online when reconnecting to the server doesn't help?

Answer:

Server access issues can cause that error, but in your case, an interrupted write to the NAS may also have damaged the workbook itself. Before attempting recovery, ask your admin to check the network folder's snapshots and confirm the local file copied fully. How to recover a corrupted Excel file online if no usable snapshot is available: upload the Excel file copy you have to Online Excel File Repair Service through your browser.

You can use a Windows PC, a Mac, or a phone or tablet that has a copy of the file. Use the screenshots and DEMO version to check the worksheet count, the report's last rows, cell contents, and the table formatting that survived. The result is saved to an XLSX file; VBA macros, password protection, and some formatting aren't recovered. The service analyses the bytes in the uploaded file and doesn't repair the NAS or RAID array, so any pieces missing from that copy may remain unrecoverable.

Antivirus blocked Excel from replacing a temporary file.

Question:

I was saving an XLSX price list in Microsoft Excel 2013 on a Windows 7 PC when the antivirus blocked a temporary file in my working folder. The admin later confirmed it was a false positive, but now the main workbook won't open and shows “Cannot access read-only document.” I have permission to use the folder, and copying the file to my desktop didn't help. Which Online Excel repair tool could help me recover the prices and SKUs without turning off my antivirus?

Answer:

Blocking the temporary file may have prevented Excel from replacing the old version with the new one, although the read-only message can also appear when drive permissions are the issue. After checking permissions and the antivirus log, work with a separate copy of the workbook to preserve its original state. You can use the Online Excel repair tool at Online Excel Workbook Repair Service: upload the file through a browser on a working computer, or from a phone you can safely copy it to.

On the preview page, look for the SKUs and their matching prices. In the DEMO version, check the number of recovered worksheets, cell contents, and number formats. The exported document will have an XLSX extension, regardless of the underlying cause of the failure. You don't need to turn off system protection to upload it. If only part of the price list comes back, compare it with the most recent version you sent to customers.

A USB flash drive was unplugged before an Excel file finished copying.

Question:

I'm moving archived records stored as XLS files created in Microsoft Excel 2003 to a Windows 10 laptop with Microsoft Excel 2021. A coworker pulled the USB flash drive before the copy finished, and I can't access the original computer right now. One file shows “Cannot open .xls file.” when I open it, although the others work. Is there an Online Excel file repair tool that could extract at least the rows that survived in this copy?

Answer:

Unplugging the drive may have cut off the transfer before the whole file was copied, so copying it again from a good original is still the best option once you can access it. In the meantime, the Online Excel file repair tool at Online Excel File Recovery Service can check what data remains in your XLS file. First, copy the file off the flash drive onto reliable storage, then upload it through a browser on your laptop, phone, or tablet.

After the repair, compare the record numbers in the screenshots, then open the DEMO file to assess the worksheet count, recovered cells, and row formatting. Extracted data is written to a new XLSX file, which you should check in a modern version of Excel. You can't recreate missing spreadsheet chunks from the filename alone. Keep the result as a separate version so you can compare it with the original later.

An Excel report download stopped midway on a phone.

Question:

I was downloading an XLSX report to my Android 14 phone. Our accountant had created it in Microsoft Excel 2024 on a Windows 11 PC. My mobile connection dropped before the download finished, but the file stayed in Downloads. When I moved it to a Windows 11 laptop with Microsoft Excel 2024, I got “Excel cannot open the file .xlsx because the file format or file extension is not valid.” Is online Excel file recovery possible if the report's download link has already expired?

Answer:

An interrupted download often leaves an incomplete file with missing content or missing parts of the XLSX structure. First, ask the sender to refresh the link: downloading the complete file again is better than extracting fragments. If you can't get the original, try Corrupt Excel file recovery online at Online Excel Workbook Recovery Service by selecting the downloaded copy directly in your Android browser.

Keep your connection stable while recovery finishes, then review the result screenshots. The DEMO file lets you assess how many worksheets were recovered, how many cells contain data, and what formatting survived, especially at the end of the report. The service creates an XLSX file but doesn't restore password protection or VBA macros. If the downloaded XLSX is empty or contains an error page instead of a workbook, there won't be any spreadsheet data to extract.

An Excel workbook upload to iCloud never finished.

Question:

I uploaded an XLSX financial plan from Excel for Microsoft 365 on my MacBook running macOS 14 to iCloud Drive, but Wi-Fi dropped during the upload. Later, I downloaded the cloud copy to my iPhone (iOS 18) and back to my MacBook, but the workbook won't open on either device. I'd already deleted the local original, and trying to restore it from the trash didn't help. Can I recover the Excel file online if this damaged version is the only one left in the cloud?

Answer:

The interrupted upload may have left an incomplete copy, but first make sure iCloud actually downloaded the entire available file rather than just displaying its icon. Also check iCloud's options for recovering deleted files. If you can't find a good version, recover the Excel file online copy by uploading it to Online Excel Spreadsheet Recovery Service on your iPhone or MacBook browser.

After recovery, check the budget sections in the preview screenshots. In the DEMO version, review the worksheet count, planned-payment cells, and date formatting. The final XLSX can contain only information present in the file you submitted. Seeing a table in the result doesn't mean it fully matches the original. After verifying the budget, save the result separately from the damaged cloud version.

OneDrive saved conflicting versions of an Excel workbook.

Question:

I was editing a shift schedule in Excel for Microsoft 365 on a Windows 11 laptop while a coworker was updating it through SharePoint. After my laptop woke from sleep, OneDrive reported a sync conflict and created two versions of the document. One opens but is missing the latest shifts. The other shows “We found a problem with some content in FileName.xlsx (xls). Do you want us to try to recover as much as we can? If you trust the source of this workbook, click Yes.” Can I repair an xlsx file online to check whether the new assignments survived in the second copy?

Answer:

A version conflict doesn't necessarily corrupt a file, but an interrupted sync may leave one copy incomplete. Save both versions separately and check SharePoint's version history before replacing anything in the shared folder. Repair the xlsx file online at Online XLSX Repair Service if no complete, up-to-date version is available, uploading the copy you think contains the new shifts.

You can start recovery in a browser on your laptop or tablet and use the result screenshots to quickly find the week you need. In the DEMO file, check the worksheet count, cell names and dates, and any shift formatting that survived. The service doesn't merge collaborative edit history, so you'll need to compare confirmed assignments with the good copy and coordinate the changes with your coworker.

An Excel workbook was copied from a failing external SSD

Question:

I was copying an Excel estimate from an external SSD to a Windows 10 laptop with Microsoft Excel 2019. The drive kept disconnecting, but a copy eventually appeared with its usual filename. Now Excel shows “Excel unable to read file.” when I open the estimate, and reconnecting the SSD no longer lets me read the original. How to repair a corrupted Excel file online when this is the only copy I can access?

Answer:

Read failures can leave gaps or damaged blocks in a copy, so the fact that the file appeared doesn't prove it's intact. How to repair a corrupted Excel file online from a failing drive: work with the copy you already have and avoid writing anything to the problem SSD. Upload the estimate to Online Excel Data Recovery Service in your laptop's browser, or transfer it to a phone or tablet and upload it from there.

After analysis, look for the work-item sections in the screenshots. In the DEMO file, check the worksheet count, quantities, rates, and number-column formatting. Recovered information is assembled into a new XLSX file, but missing source blocks can leave tables incomplete. Cross-check critical amounts against completion records and invoices. Repairing the failing drive or reading it sector by sector is a separate task.

Unreadable sectors affected an Excel file.

Question:

I keep an inventory log in an XLS file created in Microsoft Excel 2000 on an old Windows 7 desktop, and I now open it in Microsoft Excel 2010. A hard drive check found unreadable sectors, and this particular log stopped loading, with the message “.xls file format is not valid.” I copied it to a working flash drive, but the error is still there. Could Excel corrupt file repair online help recover last year's stock balances?

Answer:

If unreadable sectors affected the area where the XLS file was stored, some workbook records may have been lost before you copied it to the flash drive. In this situation, Excel corrupt file repair online means extracting available tables from that copy, not repairing the hard drive's surface. Open Online Excel Restoration Service on a working Windows PC, Mac, or mobile device and select the saved XLS file. Recovery starts automatically.

Review the preview screenshots after the damaged file is processed. Then download the DEMO file and check the worksheet count, item list, stock-balance cells, and unit-of-measure formatting. The output is an XLSX file so that you can check it in Excel 2010 or later. Rows from lost blocks may be missing. Treat recovered stock balances as provisional until you complete a physical inventory, and cross-check them against receiving and stock-issue records.

An Excel file kept its name after CHKDSK but will not open.

Question:

I maintain a contract register in Microsoft Excel 2021 on a Windows 11 PC. After an unexpected shutdown, Windows ran CHKDSK and reported fixing file system index errors. The register is still in the same folder, but opening it gives me “File format not valid.” Is there an online XLSX repair tool that can check the file's contents after a crash like this?

Answer:

Repairing the file system restores consistency to its internal structures, but it doesn't guarantee that every document's contents are intact. A workbook can keep its filename even if some data is damaged, or its chain of storage blocks is incomplete. Use the XLSX Repair Tool Online at Online XLSX File Recovery Service: upload a copy of the register from reliable storage through a browser on your computer, phone, or tablet. Upload and XLSX recovery start automatically after you select the file.

Once recovery finishes, compare the register's sections in the screenshots. In the DEMO file, check the worksheet count, contract numbers, dates, and cell formatting. The extracted information is saved to a new XLSX file, and the recovered row count may differ from the original. Before putting the register back into use, check the number sequence so missing records don't slip through.

A recovery app restored only part of a deleted Excel file

Question:

I accidentally deleted the customer spreadsheet I maintained in Microsoft Excel 2016 on a Windows 10 laptop and found it with a deleted-file recovery app. The recovered copy has the same filename, but the app warned that some clusters had already been overwritten. Excel won't open it, and I need at least the phone numbers from any surviving rows. Could Excel recovery online extract data from a partial recovery like this?

Answer:

When disk clusters have been reused or overwritten, a deleted-file recovery app may be able to piece together only fragments of the old workbook. Excel recovery online can try to parse those fragments, but it can't bring back overwritten information from the drive. Save the recovered XLSX file to a different storage device and upload it to Online Excel Spreadsheet Repair Service through a browser on an available computer or mobile device.

Upload and recovery run automatically. Check the result screenshots for the customer tables, then use the DEMO version to review the worksheet count, contact cells, and phone-number formatting. Be especially careful to match names with phone numbers so a partially recovered row isn't mistaken for a reliable record. The service creates a new XLSX file without restoring password protection or VBA macros. If the rows you need aren't in the preview, the service can't retrieve them from portions of this copy that were already overwritten.

Malware changed the contents of an Excel workbook.

Question:

I use Microsoft Excel 2019 on a Windows 10 home PC and track payments in an XLSX file. Several documents changed after a malware infection, and my antivirus removed the threat. The spreadsheet still has its XLSX extension, but opening it produces “Excel error: cannot open file because the file format or file extension is not valid.” Online repair Excel file: Is recovery possible if I don't know whether only parts of the file were damaged or the whole document was encrypted?

Answer:

Malware can alter a workbook's contents and damage its structure; full encryption prevents ordinary extraction of spreadsheet data. After cleaning the PC with antivirus software, keep a copy of the damaged spreadsheet and check for a good backup. Online repair Excel file after malware damage: try uploading the file to Online Damaged Excel File Recovery Service from a clean computer or phone to extract any surviving, unencrypted data.

If recovery produces a result, review the screenshots and DEMO file. Check the worksheet count, payment recipients, amount cells, and any surviving formatting. Recovered data is saved to an XLSX file. The service doesn't crack passwords or decrypt a workbook fully encrypted by malware. Even if the result opens, cross-check it against bank records, since altered values can still look plausible.

An accounting system exported an invalid Excel report.

Question:

I exported a trial balance as an XLS file from our accounting system on a Windows 7 PC with Microsoft Excel 2003. When I open the report, I get “This file is not in a recognisable format.” Previous exports from the same system opened normally. I can't rerun the export while the database is down for maintenance, and I need the figures today. Can I use Fix Excel File Online to check at least the rows that survived?

Answer:

The system may have generated an invalid workbook or saved another type of content, such as a text table or an error page, with an XLS extension. If it is a damaged Excel workbook, fix it online by uploading the original export to Online Excel Document Repair Service through your browser. You can upload it from any modern laptop, phone, or tablet you can copy the report to.

After analysis and recovery, check the account headings in the screenshots and download the DEMO file to assess the worksheet count, recovered cells, and amount formatting. The output is XLSX, so review it in a version of Excel that supports that format, such as Excel 2021 on another computer. If the source is actually HTML, CSV, or an error message rather than a real XLS workbook, you'll need a proper export from the accounting system instead of workbook repair.

A third-party editor damaged an older Excel workbook.

Question:

I received an archived XLS file created in Microsoft Excel 2002 and edited a few rows in a third-party spreadsheet app on an Android 13 tablet. After saving it, I moved it to a Windows 10 laptop with Microsoft Excel 2016, where opening the old workbook now triggers “This file is not in a recognisable format.” The original attachment is no longer in my old messages, and the new entries exist only in this copy. Can I Repair XLS Online to recover both the archived data and the rows I added?

Answer:

The third-party editor may have written some XLS structures incorrectly or actually saved a different format under the old extension. Repair XLS Online at Online XLS Repair Service by uploading the current copy from your Android or Windows browser if the problem is damage to a genuine workbook. Don't manually change the extension before uploading: that won't fix the contents.

After recovery, find the beginning of the archive in the screenshots. In the DEMO file, compare the worksheet count, old and new cells, number formats, and table formatting. The service saves available data to an XLSX file that you can open and check in Excel 2007 or later. If the new rows are missing, check the third-party app's local copies: information it never wrote to this file can't be extracted from this version.

An automated script did not finish creating an XLSX report.

Question:

I receive a daily XLSX report generated from our CRM by a script and open it in Microsoft Excel 2024 on a Windows 11 PC. Today the script stopped midway. My Excel macro threw “Error 1004” while loading the report, and the workbook wouldn't open normally either. No one is available to rerun the export yet, and I need the shipment list at the warehouse, where I only have an Android 14 tablet. Would an Excel repair tool online work for an unfinished report like this?

Answer:

Error 1004 covers a wide range of automation issues, but the generator stopping and the file failing to open normally suggest that the XLSX may be incomplete. The script may not have written every workbook component or may have created invalid links between tables. As a temporary workaround, use the Excel repair tool online at Online Excel Document Recovery Service. Select the report in your tablet's browser and wait for upload, analysis, and recovery to finish.

Check the screenshots for the shipments section, then download the DEMO file to assess the worksheet count, order numbers, cell contents, and date formatting. The script saves extracted information to an Excel XLSX file, but rows it never generated won't appear in the result. Password protection and VBA macros aren't recovered. Before shipping any goods, cross-check the list against the CRM. Once the generator is fixed, get a fresh, complete export.

Manual edits to internal Excel files broke workbook links.

Question:

I tried to fix links manually in an XLSM workbook from Microsoft Excel 2021 on a Windows 11 laptop by unpacking it as a ZIP file. After I edited the internal XML and zipped it back up, the workbook stopped opening normally, and its startup routine now shows “Error 91.” At this point, getting the worksheet data back matters more to me than keeping the automation. How do I repair a corrupted Excel file online if I may have broken links between its internal components?

Answer:

Manually changing XML or relationship files inside the ZIP package can make the XLSM structure inconsistent. However, Error 91 itself indicates a VBA object issue and doesn't prove the file is corrupt. First, check for a copy from before you unpacked the workbook; that's preferable to the modified archive. How to repair a corrupted Excel file online if there's no earlier copy: try uploading the current XLSM to Online XLSM Data Recovery Service from your laptop's browser or another device. Recovery starts as soon as you select the file or drag it onto the service's page.

Find the tables you need in the recovery screenshots. In the DEMO file, check the worksheet count, linked calculation cells, and remaining formatting. The service delivers recovered data as an XLSX file without VBA macros. It doesn't repair the VBA project, so event handlers and automated actions won't work in the output. Check formulas that reference other worksheets separately before relying on any calculations.

A template used to create Excel workbooks is damaged.

Question:

I create sales quotes from an XLTX template in Microsoft Excel 2019 on a Windows 10 laptop and save the finished documents as XLSX files. After an error while updating the template, both the template and the latest quote started showing “Unexpected error.” when opened. I also have an old XLT template and a macro-enabled XLTM version in the archive, but neither has the new rates. Can I fix a corrupted XLSX file online and separately check whether the current prices can be extracted from the XLTX file?

Answer:

If the source template wasn't saved correctly, a workbook created from it may also contain incomplete or invalid data. Fix a corrupted XLSX file online by uploading the quote to Online Excel Template Recovery Service in a browser on your laptop, phone, or tablet. Then upload the damaged XLTX separately. The service also accepts XLT and XLTM templates if you need to compare the archived versions you have.

For each result, review the screenshots and DEMO file. Check the worksheet count, cells containing the new rates, number formats, and quote formatting. Recovered data from any of these sources is saved as XLSX, so you'll need to recreate a working template. Password protection and VBA macros aren't restored, which is especially relevant to the XLTM version. Move the prices into a new template only after verifying item descriptions, units of measure, and totals.

Excel offers to recover content when opening a workbook.

Question:

I'm opening an XLSX purchasing plan in Excel for Microsoft 365 on a MacBook running macOS 15 after receiving it from a coworker who uses Microsoft Excel 2024 and Windows 11. Excel offers to recover the workbook's content every time, but some tables are still empty after I accept. The same copy won't open on my iPhone with iOS 18 either, and resending the attachment didn't help. Could an Excel online repair tool check the original file without saving over it with a stripped-down version?

Answer:

The recovery prompt means Excel found an inconsistency in the workbook, but it doesn't identify the operation that caused it. Keep the original attachment, since saving an already repaired version may leave out data Excel discarded. The Excel online repair tool at Online Microsoft Excel Repair Service lets you upload and recover that copy through a browser on your MacBook or iPhone and review the available results.

On the preview page, look for the previously empty tables in the screenshots. You can also download the DEMO file to check the worksheet count, purchasing line items, calculation cells, and formatting. Extracted data is saved as an XLSX file. Recovery depends on the original file's condition. Compare the result with Excel's built-in recovery output, and use only verified rows supported by purchase requests.

Excel reports unreadable worksheet content.

Question:

I maintain an XLSX project spreadsheet in Microsoft Excel 2013 on a Windows 10 laptop and store it in Dropbox. After a sync interruption, the workbook started showing “Excel found unreadable content in filename.xlsx.” Excel's built-in repair left the project milestones sheet empty. I have the same damaged copy downloaded to an Android 14 tablet. Can Online Excel sheet repair help if I've already saved the other worksheets separately?

Answer:

Unreadable content may be in a particular worksheet's data or in structures shared across the workbook, so an empty sheet after repair doesn't tell you everything about the remaining fragments. For Online Excel sheet repair, upload the entire original workbook to Online Excel Worksheet Recovery Service, since a worksheet tab generally isn't a standalone file. You can upload it directly from your Android tablet's browser while keeping the original unchanged. Recovery starts automatically after you select the file.

Look for milestone names in the recovery screenshots. In the DEMO file, check the number of recovered worksheets, deadline cells, and status formatting. The service assembles available data into an XLSX file but doesn't guarantee that every row of the damaged sheet will return. Compare recovered deadlines with the project tasks and check Dropbox's version history if needed.

Excel says the file format or extension is invalid.

Question:

I received an XLS calculation file on a USB flash drive. It was created in Microsoft Excel 2003, and I'm trying to open it on a Windows 11 laptop with Microsoft Excel 2024. When I open it, it shows “File format not valid,” even though my coworker used the file yesterday and no one intentionally changed the extension. I copied it to the internal drive, but the error persists, and my coworker can't access a computer right now. Repair Excel corrupt online: can I recover the workbook without manually changing its extension to XLSX?

Answer:

Changing an XLS extension to XLSX doesn't convert the data or fix corruption, so leave the original copy's extension alone. The error may indicate a damaged workbook structure or a mismatch between the file type and its extension. Repair Excel corruption online from the copy you saved: upload it to Online Corrupted Excel File Repair Service in your laptop's browser or on a mobile device. Upload and recovery start automatically after you select the file.

If the service can repair the workbook, the page will show screenshots for review and a link to download a DEMO version of the recovered file. Check the worksheet count, calculation cells, number formats, and remaining formatting, then verify the totals. Recovered data is saved in XLSX format. If the uploaded copy doesn't contain an actual Excel workbook at all, you'll need a valid file from the sender.

Some worksheets in an Excel workbook will not open.

Question:

I edit a shared XLSX log in Microsoft Excel 2007 on a Windows 7 PC, and the file is stored in a network folder. After a connection failure, I first got “File in Use error opening Excel 2007 Files.” I eventually regained access, but two worksheets stopped loading. All my coworkers have closed the workbook, and a local copy behaves the same way. Would an Excel file repair tool online help recover the data from those inaccessible tabs?

Answer:

The “File in Use …” message usually points to a lock on an open document, but a problem that persists in a local copy needs a separate check of the workbook's contents. Also make sure the worksheets aren't simply hidden. If opening them triggers an error, keep a separate copy of the damaged original. Use the Excel file repair tool online at Online Excel Worksheet Repair Service by uploading the damaged workbook through a browser on a working computer or tablet.

Check the screenshots to see whether the tables from the inaccessible tabs appear. In the DEMO file, assess the worksheet count, cell contents, and formatting. The service saves extracted data to a new XLSX file, but it doesn't clear network file locks or restore shared-folder permissions. Before replacing the shared log, compare the recovered rows with the last working version and coordinate the changes with your coworkers.

Excel built-in repair removed important records.

Question:

I use Microsoft Excel 2021 on a Windows 11 laptop to calculate commissions in an XLSM file, while the rate lookup tables are stored on worksheets in an XLAM add-in. After an automatic update failed, the workbook started showing “Error 13,” and Excel's built-in repair removed some records and formulas. I kept the damaged originals of both files because the repaired copy is missing the rates I need. Repair file Excel corrupt online: can I extract that information without recovering the macros themselves?

Answer:

Error 13 means a type mismatch occurred while running VBA and doesn't necessarily indicate file corruption. However, a report of removed records is a reason to check the original files. Repair file Excel corrupt online to retrieve the remaining data: upload the original XLSM file to Online Excel Cell Data Recovery Service, then process the XLAM containing the lookup tables separately. You can do this in a browser on Windows, macOS, a phone, or a tablet, as long as both copies are available to select.

Recovery runs on the server, and a preview page opens when it finishes. Look for the rate table in the recovery screenshots. In the DEMO file, check the worksheet count, recovered cells, formulas, and remaining formatting. Data from each source is saved in XLSX format, so a working XLAM add-in and its VBA code aren't restored. Verify the recovered rates against the contract terms before using them to recalculate commissions.

An older XLS or XLT file has a damaged internal structure.

Question:

I'm going through an archive of XLS files and XLT templates created in Microsoft Excel 2000 and 2002 on an old Windows 7 PC with Microsoft Excel 2003. Opening one XLS file shows “Microsoft Excel has encountered a problem and needs to close.” On the next launch, I get “The document Filename caused a serious error the last time it was opened.” Other archive files open on this PC, but the problem copies won't open in Microsoft Excel 2024 on a Windows 11 laptop either. Can I repair corrupted Excel files online to retrieve the tables from these older binary files?

Answer:

Damaged internal records or data streams in XLS and XLT files can prevent Excel from parsing them and cause a crash, although a crash message alone doesn't identify the cause. If the same copy fails on different computers, check the file separately from the Office installation. Repair corrupted Excel files online by trying Online Excel Table Recovery Service: upload copies of the XLS and XLT files one at a time through a browser on a modern laptop, phone, or tablet.

For each file, review the result screenshots and DEMO file, checking the number of recovered worksheets, table cells, and remaining formatting. Recovered data is saved directly to an XLSX file, so check it in Excel 2024 or another version that supports that format. Keep each result associated with its original filename and compare the archived figures with paper reports before using them in new calculations.

Resources

  1. Microsoft Office - Microsoft Office, MS Office, or simply Office is a suite of office applications and, formerly, a family of client and server software and services developed by Microsoft.
  2. Microsoft Excel - Microsoft Excel, or simply Excel, is a spreadsheet editor developed by Microsoft for Windows, macOS, Android, iOS and iPadOS. It features calculation or computation capabilities, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications (VBA).
  3. LibreOffice - LibreOffice is a free, open-source suite of office applications developed by The Document Foundation (TDF). It was created in 2010 as a fork of the OpenOffice.org project, which was itself the successor to the discontinued StarOffice suite. The suite includes applications for word processing (Writer), spreadsheets (Calc), presentations (Impress), vector graphics (Draw), databases (Base), and formulas (Math). It supports the OpenDocument format and is compatible with other common formats, including those used by Microsoft Office.
  4. OpenOffice - OpenOffice.org is an open-source suite of office applications. It was based on the proprietary StarOffice product developed by Star Division, which Sun Microsystems acquired in 1999. In July 2000, Sun released the software’s source code and presented it as a free alternative to Microsoft Office. OpenOffice.org 1.0 was released on May 1, 2002.
  5. XLS files - Excel Binary File Format. Microsoft Excel File Format.
  6. XLSX files - Office Open XML Spreadsheet Document, ECMA-376 1st Edition
  7. XLT files - Excel 97-2003 Template
  8. XLSM files - OpenXML Spreadsheet Macro-Enabled. Variant of the OpenXML Spreadsheet file format which allows the use of macros.
  9. XLTM files - Microsoft Excel Macro-Enabled Template.
  10. XLTX files - Excel Template.
  11. XLAM files - Microsoft Excel Macro-Enabled Add-In.
  12. Google Spreadsheets - Google Sheets is a spreadsheet program included as part of the free, web-based Google Docs Editors suite offered by Google. Google Sheets is available as a web application, as mobile apps for Android and iOS, and as a desktop application on ChromeOS. The service is compatible with Microsoft Excel file formats.
  13. WPS Office Writer - WPS Office (an acronym for Writer, Presentation, and Spreadsheets; formerly known as Kingsoft Office) is a suite of office applications for Microsoft Windows, macOS, Linux, iOS, Android, Fire OS, and HarmonyOS, developed by the Chinese software company Kingsoft.
  14. Office Open XML - Office Open XML (also informally known as OOXML) is an XML-based file format that uses ZIP compression and was developed by Microsoft to represent spreadsheets, charts, presentations, and word-processing documents. Ecma International standardized the initial version as ECMA-376, while ISO and IEC standardized later versions as ISO/IEC 29500.
  15. ECMA-376 - Office Open XML file formats. ISO/IEC 29500.

Victor G. Bobrov, Senior Software Engineer.

MCSD, MCDBA

An experienced specialist in recovering Microsoft Excel XLX/XLSX files. A recognized expert in file data storage. A practical specialist in repairing damaged files of various types and formats, with over 25 years of experience.

Customer's reviews and ratings

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