Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix OneDrive Sync Connection Refused Error

You open OneDrive and see a 'Connection refused' error. Your files aren't syncing, and the OneDri...

Fix Windows Activation Authentication Failed via Command Prompt

If you see 'Windows activation authentication failed' when trying to activate Windows, the issue ...

How to Enable BitLocker Service When It's Unavailable

You open BitLocker Drive Encryption and see "BitLocker service is unavailable" or the service won...

How to Fix Windows Defender Error 0x80070422

When you see error 0x80070422 in Windows Defender, the Security Center service or Windows Update ...

Fix Windows Update 404 Not Found Error When Antivirus Interferes

You try to run Windows Update, but instead of the usual process, you get a 404 Not Found<...

Fix Windows Security Auto-Start Permission Denied Error
You might see a 'permission denied' error when Windows Security (Windows Defender) fails to start...