Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After a recent Windows update, you might see a rate limit error when trying to connect via Remote...

If you see the error “Windows Search Token Expired” with code 0x80090016, it usually means the se...

When you open Windows Terminal and see a 'permission denied' message, it usually means the termin...

You type MpCmdRun.exe -Scan -ScanType 2 or another Defender command in Command Promp...

You might see a Windows Defender rate limit error when scanning files or updating definitions. Th...

If you see "Windows Defender service not running" or a red warning in Security Center, the underl...