Checklists for software errors, setup, and tool workflows.

Fix Windows Defender Threat Service Stopped After Update

After a Windows Update, you might see a yellow warning in Windows Security saying "Threat service...

Fix Microsoft Teams Offline Installer Error 0x80070005

When you run the Microsoft Teams offline installer, error 0x80070005 typically appears as 'Access...

Fix Windows Update Stuck on 'Pending Install' for Hours

You click 'Check for updates,' see 'Pending install,' and it stays that way for hours. The progre...

Fix Windows Search Access Denied for Administrator Account

Why You See 'Access Denied' as Administrator

You're logged in as an administrator, but Wi...

Windows Security 502 Bad Gateway: Troubleshooting Checklist

If you see a 502 Bad Gateway error when opening Windows Security, it usually means the app can't ...

Fix High CPU Usage by MsMpEng.exe (Windows Defender)

If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...