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 Update Service Permission Denied Error

You try to start the Windows Update service via services.msc or an elevated command prompt and ge...

Fix Remote Desktop Error 0x204: Connection Failed

When you see "Remote Desktop failed to start" with error 0x204, the connection to the remote comp...

Troubleshoot 502 Bad Gateway with Curl Commands

A 502 Bad Gateway error means your server (gateway) got an invalid response from an upstream serv...

Fix Windows Update Version Mismatch Error

When you see a version mismatch error in Windows Update, it usually means the update files on you...

OneDrive Setup Sync Stuck at Starting: How to Fix

You open OneDrive and see 'Setting up sync' or 'Starting' for a long time—sometimes hours. This u...