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 Update Error 0x80070643

When Windows Update fails with error 0x80070643, the update usually stops at a certain percentage...

How to Fix Windows Defender Not Turning On

Windows Defender (now called Microsoft Defender Antivirus) sometimes refuses to turn on or stay o...

Fix 'Command Prompt Not Found' Error After Windows Update

After a Windows update, you might see a '404 not found' error when trying to open Command Prompt,...

Fix BitLocker Service Unavailable Due to Group Policy

You might see 'BitLocker service unavailable' when trying to enable BitLocker or manage encrypted...

How to Fix Chrome DNS Errors and Pages Not Loading

When Chrome suddenly stops loading any pages and shows a DNS error, it's usually a network config...