Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see a 502 Bad Gateway error when trying to access OneDrive, it usually means the server re...

After a Chrome update, some users see a message like “Profile rate limit error” or “Your profile ...

You try to connect to a remote server with Putty on port 22, but you get 'Connection refused'. Th...

You open Windows Security and see a message about a version mismatch, or the Security Center serv...

After a recent Windows update, you may see an error like 'windows defender' is not recogniz...

Fix Windows Activation Auto-Start Service Stuck
You go to activate Windows, but the activation window just hangs or shows "Checking..." indefinit...