Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Unlock a File Locked by System Command Prompt

You try to delete or move a file, but Windows says it's open in 'System' or 'Command Prompt'. Thi...

Fix Windows Defender Blank Screen via Registry Edit

If you open Windows Defender Security Center and see only a blank white or gray screen, the inter...

Fixing Microsoft Teams Rate Limit Exceeded Error

If you see "Rate limit exceeded" (error code 429) in Microsoft Teams, it means your app or script...

Fix Chrome Profile File Locked by Another User

If Chrome shows "Your profile could not be opened correctly" or "The profile appears to be in use...

Fix Windows Activation slmgr Access Denied Error

When you try to activate Windows using slmgr.vbs commands, you might see an ...

Fix Microsoft Store Download Failed on Mac (Error Code)
If you see a download failed error in the Microsoft Store on your Mac, the error code points to a...