A family of Microsoft word processing software products for creating web, email, and print documents.
Please try to open Word in safe mode. To do so, press Win + R to bring up the Run dialog, type winword.exe /safe and click OK.
If Word still doesn't open, do an online repair of Office to resolve the issue.
- Open Settings → Apps → Installed apps (or Apps & features, depending on Windows version).
- Select the Microsoft 365 or Office product you want to repair and select Modify.
- Select it and choose Modify.
- When prompted, choose
Online Repair(not Quick Repair), then start the repair.
Reference: Repair an Office application | Microsoft Support