Oct 14, 2025 · For example, a common troubleshooting option is to enable Safe Mode, which starts Windows in a limited state, where only the bare essentials services and drivers are started.

See how to work with Office safe modes to safely use a Office program that has encountered certain problems.

Type Outlook.exe /safe, and click OK. Tip: If Windows can't find Outlook.exe /safe, try using the full path to Outlook (for example C:\Program Files\Microsoft Office\OfficeXX, where XX is your version number).

Are you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages? We can fix the problem for you, or you can use the …

You may need to start Windows in Safe mode or different advanced troubleshooting modes so that you can find and fix the problem. The Windows Startup Settings article can help you with Windows safe …

When you run Excel in safe mode, it bypasses functionality and settings such as alternative startup location, changed toolbars, startup folders used by Excel, Excel add-ins, and most COM add-ins.

If Outlook stops responding at a screen that says "Processing," you can close Outlook, start it in safe mode, then close it and open it normally to fix the problem.

Describes how to use the clean boot process to troubleshoot a problem in Windows

Restart new Outlook Right-click Start and select Task Manager. Select Microsoft Outlook, then End task. Check to make sure that new Outlook is closed, then close Task Manager. After new Outlook closes, …

Start your PC in safe mode. If you're having trouble restarting, you can start your PC in safe mode. See Start your PC in safe mode in Windows 11 for details. From safe mode, you can try the remaining …