Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You open OneDrive and see an error about a missing or conflicting dependency. The app may fail to...

You might see a warning that Windows Defender can't update because of an SSL certificate error. T...

You see error 0x800704ec when opening Windows Defender or Windows Security. The message says auth...

If Windows Search frequently shows a connection timeout error, you're not alone. This checklist w...

You open Command Prompt or PowerShell, type something like MpCmdRun or Get-MpC...

Fix Windows Update Version Mismatch Not Working
You try to install a Windows update but get a version mismatch error. The update fails, and you'r...