Your File Wasn't Uploaded Because We Cannot Merge Changes Made By Another User

Are you getting the annoying error “your file wasn’t uploaded because we cannot merge changes made by another user” Check out the below guidance on how to fix this error.

Understanding the Error:

This error commonly arises when attempting to save a document to a server, but your edits conflict with changes made by others. It’s especially prevalent when multiple users collaborate on the same document, particularly if someone employs an Excel feature that isn’t fully supported in co-authoring.

Steps to Resolve the Error:

Save a Copy: To safeguard your edits, select ‘Save a Copy’ and save the file with a new name. Then, reopen the live document and reintegrate any changes not reflected in the server copy.

Avoid Unsupported Features: Some Excel features, like protection or data validation, may not be fully compatible with co-authoring. If possible, steer clear of using these features.

Delete Cache in Office Upload Center: Deleting the cache in the Office Upload Center can occasionally rectify this issue. To do this, press the Windows key, type ‘Office Upload Center,’ open it, navigate to ‘Settings,’ and choose ‘Delete cached files.’

Repair Office: If the problem persists, consider repairing Office through the Control Panel.

Update Office: Ensure both you and your collaborators are using the latest version of Office, or at least the same version.

Remove Password Protection: If the Excel file has a password, attempt to remove it to see if it resolves the error.

Creating a backup of your work before making substantial changes or updates is a wise practice. If issues persist despite trying these steps, seeking further assistance from Microsoft Support is a recommended course of action.

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@Mr.Robot has written an excellent post on fixing the error " Your File Wasn’t Uploaded Because We Cannot Merge Changes Made By Another User". Thanks for that. However, for me, it took some additional steps to resolve this error, which I am sharing below:

  • Update Office: Make sure to do this by the most recent version of Office. An easier way to update Office is to open a spreadsheet, go to File > Account > Update Options > Update Now which will automatically get you the latest updates available.

  • Check File Format: Co-authoring is only enabled for the most recent file extensions with the following list: .docx (Word), .pptx (PowerPoint), and .xlsx(Excel). Therefore, ensure that the workbook is created in an appropriate format.

  • Try a Different Device: Let me know if the issue still remains. Try to access the file from a different device. This can be quite helpful to know whether the problem lies with the device or the file.

  • Check for Specific Workbook Issues: With the aim of identifying if the problem is related to a particular workbook, you may create a new workbook and then see whether the problem exists with the new workbook.

  • Keep this in mind: create a copy of your work when you feel like implementing really significant alterations or updates.