
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 ...

You click on the Search settings icon or try to open the search settings page, but nothing happen...

You boot your PC and notice Windows Security (formerly Windows Defender) isn't running. The icon ...

After a recent update, some users see a '502 Bad Gateway' error when trying to access OneDrive. T...

You try to visit a website in Firefox and see a Secure Connection Failed error, ...

If OneDrive no longer starts automatically when you sign into Windows, you're not alone. This oft...