Start Word in Safe Mode; if it still fails to open, perform an Online Repair of Microsoft 365 or Office.
1. Test Word in Safe Mode
- Press Windows key + R.
- Enter:
winword /safe
- Select OK or press Enter.
If Word opens and its title bar says Safe Mode, an add-in may be preventing normal startup. Microsoft recommends disabling add-ins individually to identify the affected one.^1^
- In Word, select File > Options > Add-Ins.
- At the bottom, set Manage to COM Add-ins, then select Go.
- Clear one add-in, select OK, and restart Word normally.
- Repeat until Word starts. Leave the problematic add-in disabled or obtain an updated version.
Older versions of ABBYY FineReader, PowerWord, and Dragon Naturally Speaking are known to cause startup problems.
2. If Safe Mode also fails, run Online Repair
Online Repair repairs the entire Office installation, not only Word:
- Windows 11: Right-click Start > Installed apps.
- Windows 10: Right-click Start > Apps and Features.
- Find Microsoft 365, Microsoft Office, or the standalone Word installation.
- Select the three dots if shown, then Modify.
- Choose Online Repair > Repair and complete the prompts.
- Restart the computer afterward, then open Word.
Choose Online Repair, not merely Quick Repair or the Repair Now button in the error dialog. Online Repair is the more comprehensive option.^2^
Online Repair may require an Internet connection and administrator approval.
3. If Word still does not open
Uninstall and reinstall Office:
- Confirm that the Microsoft 365 subscription or Office purchase appears at https://account.microsoft.com/services/.
- Uninstall Microsoft 365 or Office from Installed apps/Apps and Features.
- Restart the computer.
- Return to the same Microsoft account page and reinstall Office.
Reinstallation is the documented fallback when Safe Mode and repair do not resolve an Office startup failure.^1^
References
- I get a "stopped working" error when I start Office applications on my PC | Microsoft Support
- Repair an Office application | Microsoft Support