
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 sign in, see "Preparing Windows" or a spinning circle, then get dumped back to the login scre...

You open Windows Security and see a yellow warning: “Threat service has stopped. Restart it now.”...

You reset OneDrive sync settings to fix a problem, but the changes don't stick. The settings reve...

When you type a command in Command Prompt and get 'The system cannot find the path specified', it...

You open the Microsoft Store and it hangs on a loading screen, or you get a timeout error when tr...