A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
If Repair Now from the Excel error dialog did nothing, the next step is to run an Office Online Repair from Windows settings. This is more thorough than the in-app repair prompt.
- Close all Office apps.
- Right-click Start.
- In Windows 11, select Installed apps. In Windows 10, select Apps and Features.
- Find Microsoft Office or Microsoft 365 in the app list.
- Select it, then choose Modify. If needed, select the three dots first.
- Choose Online Repair > Repair.
- Quick Repair is faster, but Online Repair is the option that makes sure everything gets fixed.
- Follow the on-screen steps, then restart the PC.
- Open Excel again and test it.
If Excel opens to a blank gray window with buttons grayed out, Microsoft specifically recommends Online Repair for that symptom as well.
If Excel still hangs, freezes, or will not start after the repair, the next supported troubleshooting step is a selective startup (clean boot) to check whether another background app or service is conflicting with Excel.