having issue while opening

Start Excel in Safe Mode to determine whether an add-in or startup customization is causing the crash, then disable add-ins or proceed to Microsoft 365 repair based on the result.

1. Test Excel in Safe Mode

1. Press Windows key + R.
2. Enter:

      excel /safe
   

3. Select OK.

Safe Mode bypasses Excel add-ins, startup folders, customized toolbars, and certain settings.^1^

If Excel opens in Safe Mode:

1. Select File > Options > Add-ins.
2. At the bottom, select COM Add-ins from the Manage list, then select Go.
3. Clear every checkbox and select OK.
4. Close Excel and open it normally.
5. If Excel now works, re-enable the add-ins one at a time, restarting Excel after each one. Leave the add-in that triggers the error disabled.

2. Run the Excel check troubleshooter

If Excel will not open in Safe Mode—or disabling add-ins does not resolve it—run Microsoft’s Excel check troubleshooter:

1. Open the Microsoft 365 troubleshooters page on the affected PC.
2. Under Excel check troubleshooter, select Start.
3. If prompted that the site is trying to open Get Help, select Open.
4. Follow the prompts and apply the recommended correction.

This troubleshooter is designed for Excel startup, hang, and crash problems. It requires Windows 10 or later and must run on the PC where Excel is installed.^2^

The automated process can modify the registry and move Excel startup files, so back up important files before running it.

3. Repair Microsoft 365

If the troubleshooter does not fix the problem, repair the Microsoft 365 installation.^3^

Windows 11

1. Right-click Start and select Installed apps.
2. Find Microsoft 365.
3. Select the three dots > Modify.
4. Select Online Repair > Repair.
5. Restart Windows after completion and test Excel.

Windows 10

1. Right-click Start and select Apps and Features.
2. Select Microsoft 365, then Modify.
3. Select Online Repair > Repair.
4. Restart Windows and test Excel.

Online Repair repairs the entire Microsoft 365 suite, not only Excel. It is more comprehensive than Quick Repair and requires an internet connection.

If Excel still produces the same error after Online Repair, use the Microsoft 365 uninstall troubleshooter from the Get Help page, restart the PC, and reinstall Microsoft 365.^2^

References

1. Excel not responding, hangs, freezes or stops working
2. Microsoft 365 troubleshooters | Microsoft Support
3. Repair an Office application