Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see error 0x80070002 when trying to activate Windows or install updates, it usually means ...

If Windows Defender keeps asking you to sign in repeatedly on Windows 10, even after you enter co...

If Windows Defender won't start in Windows 10, you might see error messages like "Service did not...

You open Windows Defender Security Center or try to run a scan, and you see an error: Pat...

Fix VS Code Extension Host Out of Memory Error
You're working in VS Code and suddenly a popup says "Extension host terminated unexpectedly"<...

Fix PowerShell 504 Gateway Timeout Error
You run a PowerShell script that calls a web API, and after a while you get a 504 Gateway...