
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're browsing on Chrome for Android and suddenly get a network error page. The page won't load,...

You installed ImageMagick, type convert in Command Prompt, and get 'convert' i...

You run telnet in Command Prompt and get a connection timeout error. T...

When you move your mouse in a remote desktop session and the cursor lags or jumps, or when keystr...

If Windows Security (formerly Windows Defender) is not scanning for viruses, you may see an error...