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...

OneDrive 504 Gateway Timeout Troubleshooting Checklist

If you see a 504 Gateway Timeout error in OneDrive, it means the server didn't respond in time. T...

Fix Command Prompt Not Working After Windows Update

After a Windows update, you might click Command Prompt and nothing happens—or it opens and closes...

OneDrive Sync Error 404 Not Found: Causes and Fixes

You open OneDrive and see a '404 Not Found' error during sync. This usually means OneDrive can't ...

Fix Putty Connection Refused Due to Windows Firewall

You're trying to SSH into a remote server using Putty, but you get a 'Connection refused' error. ...

Windows Update Cannot Connect to Update Server: Fixes

When Windows Update shows “cannot connect to update server,” you may see error codes like 0x80072...