
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 ...

If you click the Command Prompt shortcut and nothing happens, or it flashes and closes, you're no...

You're trying to activate Windows, but you get a "permission denied" or "access denied" error. Th...

You installed a Chrome extension, but when you try to use it, you see a 'permission denied' error...

If you see a BitLocker error about rate limits when trying to enable or manage encryption, the is...

You open Task Manager and see Microsoft Teams using 1 GB of RAM, and it keeps climbing. Over a fe...