Checklists for software errors, setup, and tool workflows.

Fix CMD Service Unavailable Due to Group Policy

Situation

You open Command Prompt and see an error like "Command Prompt has been disabled...

Fix Windows Security Migration Not Working After Update

After a Windows update, you might find that Windows Security (formerly Windows Defender) fails to...

Fix Windows Defender 504 Gateway Timeout & Permission Denied Errors

You open Windows Defender Security Center and see "504 Gateway Timeout" or "Permission Denied" er...

Troubleshoot PowerShell Crashing Due to Profile Script

PowerShell crashing immediately after starting, or during the first few seconds, often points to ...

Fix Windows Security Authentication Failed Event ID 4625

If you're seeing Event ID 4625 in Windows Security logs, it means an account failed to log on. Th...

Fix Command Prompt Authentication Failed for Network Drive

When you try to map a network drive using net use in Command Prompt and get an authe...