ms file is not opening

Use Word’s Open and Repair command on the affected document rather than selecting the repair option in the error message.

Repair the Word document

1. Make a copy of the document first and work on the copy.
2. Open Microsoft Word without opening the document.
3. Select File → Open → Browse.
   • Do not select the document from the Recent list.
4. Navigate to the document and select it once.
5. Select the arrow beside the Open button.
6. Select Open and Repair. Microsoft documents this command specifically for files Word cannot open normally because they may be damaged.^1^
7. If it opens, immediately select File → Save As, give it a new name, and save it as a new .docx file.

If Word shows a Document Recovery pane afterward, open the version with the most recent date and time, review it, and use Save As before removing any recovered versions.^2^

If Open and Repair cannot recover it

Check whether an earlier copy is available:

• If the file was stored on OneDrive and AutoSave was enabled, look for a previous version.
• After a crash or power loss, reopen Word and inspect the Document Recovery pane.
• If several recovered copies appear, start with the most recently created one and save it under a different name.

Microsoft also provides Word-specific damaged-document troubleshooting from the Application specific troubleshooting steps section of its file-corruption guidance.^1^

If Word itself—or multiple documents—shows the repair message

That indicates a broader Word/Office problem rather than a problem limited to this document. Run the full Office repair:

1. Close all Office applications.
2. In Windows 11, right-click Start → Installed apps.
   In Windows 10, right-click Start → Apps and Features.
3. Find Microsoft 365 or Microsoft Office.
4. Select the three dots, if shown, and choose Modify.
5. For a Click-to-Run installation, select Online Repair → Repair. For an MSI installation, select Repair → Continue.
6. Complete the prompts and restart Windows if requested.

This repairs the entire Office installation, including Word. Online Repair is the more complete option; Quick Repair is the faster, narrower repair.^3^

If Word still cannot start after Online Repair, use Microsoft’s Word startup troubleshooting procedures. Registry-related methods in that article can reset Word settings, so export any referenced registry key before deleting it and restore it if the test does not resolve the issue.^4^

References

1. Open a document after a file corruption error | Microsoft Support
2. Recover your Microsoft 365 files | Microsoft Support
3. [Windows 11](https://support.microsoft.com/office/lifecycle/repair-an-office-application)
4. How to troubleshoot problems that occur when you start or use Word | Microsoft Support