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

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

You might see a BitLocker version mismatch error when trying to unlock an encrypted drive on a di...

If the Microsoft Store won't load, shows error 0x80131500, or fails to download apps, a DNS issue...

You open Windows Security and see real-time protection is off. Trying to turn it on fails with a ...

You open Chrome and your computer slows to a crawl. Task Manager shows Chrome eating up gigabytes...

If you see npm ERR! code EACCES or Error: EACCES: permission denied whe...