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...

How to Fix Windows Security Real-Time Protection Not Turning On

If you see that Windows Security's real-time protection is stuck off and won't turn on, you're no...

Fix 'Access Denied' Errors After Windows Update

After a Windows update, you might see "Access Denied" errors when trying to open Windows Security...

Fix Remote Desktop Failed Due to Firewall Settings

You try to connect to a remote PC using Remote Desktop (RDP) but get an error like "Remote Deskto...

Fix Windows Security Invalid Configuration Permission Denied

You open Windows Security and see 'Invalid configuration. Permission denied.' This usually means ...

Fix Windows Defender High CPU Usage in Windows 10

If you notice your PC slowing down and the fan spinning up, Windows Defender might be using more ...