
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 ...

After a recent Office or Windows update, you might see an error that your Outlook profile is from...

If Chrome keeps crashing when you open a specific profile—showing “Aw, Snap!” pages or closing un...

You're working in Chrome and suddenly get a 400 error: token expired. This usual...

You see "Windows activation authentication failed" with error code 0x8007232b. This usually means...

You open Command Prompt, and instead of a blinking cursor, you get a frozen window that won't res...