
Windows Defender Service Troubleshooting Checklist
If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

When you try to connect to a remote desktop and see an error like "The certificate is not from a ...

If Chrome shows a profile error message—like "Your profile could not be opened correctly" or "Som...

If you see a 404 Not Found error when trying to open your Chrome profile on Mac,...

If you reset Outlook settings and now your mail, calendar, or contacts won't sync, you're not alo...

You might see an error like "Windows Defender can't start because of a dependency conflict" or a ...