A family of Microsoft word processing software products for creating web, email, and print documents.
Run a full Online Repair from Windows Settings instead of clicking Repair in Word’s error message.
1. Run Online Repair
Before starting, ensure the Microsoft account used for Office is accessible and the Office license or Microsoft 365 subscription is associated with it, because Online Repair can reinstall Office components ^1^.
- Close all Office applications.
- Open the Office repair screen:
- Windows 11: Right-click Start → Installed apps.
- Windows 10: Right-click Start → Apps and Features.
- Find Microsoft 365 or Microsoft Office.
- Select the three dots if displayed, and then select Modify.
- Select Online Repair → Repair.
- Follow the prompts, restart Windows when complete, and try Word again.
Online Repair repairs the entire Office suite, even if only Word is affected. It is more comprehensive than Quick Repair, which only detects and replaces corrupted files ^2^.
2. If Online Repair completes but Word still will not open
Test Word without automatically loading add-ins, templates, or customized settings:
- Press Windows + R.
- Enter:
winword /a
- Press Enter.
The /a switch starts Word without automatically loading add-ins and global templates ^3^.
- If Word opens: The installation is functioning, and an add-in, template, or Word setting is likely involved. Disable add-ins one at a time through File → Options → Add-ins, checking both regular and COM add-ins ^4^.
- If Word still does not open: Proceed to reinstall Office.
3. Reinstall only if the preceding steps fail
Microsoft’s startup-error procedure recommends uninstalling and reinstalling Microsoft 365 or Office when repair does not resolve the issue. The uninstall troubleshooter requires Windows 10 or later and must be run on the affected PC ^2^.
Confirm account and license access before uninstalling so Office can be downloaded and activated again. Your Word documents are separate from the Office application, but backing up important files before reinstalling is still advisable.
References
- Word not opening - Microsoft Q&A
- [Windows 10](https://support.microsoft.com/office/lifecycle/something-went-wrong-error-when-you-try-to-start-a-microsoft-365-app)
- How to troubleshoot problems that occur when you start or use Word | Microsoft Support
- I get a "stopped working" error when I start Office applications on my PC | Microsoft Support