
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 restart Chrome, and suddenly one or more extensions are grayed out, missing, or not functioni...

After a Firefox update, some users find the browser becomes unresponsive—crashes, freezes, or won...

You open the Microsoft Store and see nothing but a blank white or gray screen. Other apps—Edge, O...

If scheduled tasks aren't running, the Task Scheduler service might be disabled or stopped. This ...

If you rely on Windows Defender logs for security auditing or troubleshooting, a missing log file...