
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 open Task Manager and see Command Prompt (cmd.exe) using a lot of CPU – sometimes 30% or more...

You run docker build and get an error like failed to solve: repository does no...

When Windows Security shows a cache error, you might see messages like "Something went wrong" or ...

You're in a call or trying to send a message, and Teams shows a network error. The app may freeze...

When running docker compose up and seeing permission denied related to ...