A family of Microsoft word processing software products for creating web, email, and print documents.
Run a full Online Repair from Windows 11 Settings rather than relying only on the Repair now button shown when Word starts.
Run Online Repair
Before starting, ensure that you know the Microsoft account associated with Office, because Online Repair may require activation afterward.
- Close Word and all other Office applications.
- Right-click Start and select Installed apps.
- Find Microsoft 365, Microsoft Office, or the standalone Word installation.
- Select the three dots (…) beside it, and then select Modify.
- If prompted by User Account Control, select Yes.
- For a Click-to-Run installation, select Online Repair → Repair.
- Do not select Quick Repair; Online Repair performs the more complete repair.
- For an MSI-based installation, select Repair → Continue.
- Follow the prompts, restart Windows when finished, and try opening Word again.
The repair applies to the entire Office suite even when only Word is affected. ^1^
If Word still does not open
Uninstall and reinstall Office:
- Confirm that your Office licence or Microsoft 365 subscription appears under the Microsoft account used to purchase or activate it.
- Open Settings → Apps → Installed apps.
- Find Microsoft 365 or Microsoft Office, select … → Uninstall, and complete the removal.
- Restart the computer.
- Sign in to the same Microsoft account and reinstall Office.
- Open Word and sign in to activate it.
Microsoft’s startup-error guidance recommends reinstalling Office when repair does not resolve the problem. It also provides an uninstall troubleshooter for Microsoft 365 and supported perpetual Office releases. ^2^
If reinstalling also fails, note the complete message or error code displayed after clicking Word; that information is needed to distinguish an Office installation problem from an activation or Windows issue.
References