Knowledge base for software setup, errors, and daily tool work.

Fix OneDrive Sync Issues After Windows Update

After a Windows update, you might find OneDrive stuck on "Processing changes" or showing sync err...

How to Fix 'Repair Windows Defender Command Not Found' Error

If you run repair-windows-defender in Command Prompt or PowerShell and get a 'comman...

Fix Windows Defender Service Not Starting Error

If you see an error that Windows Defender won't start—or the service stops immediately—it's usual...

Fix Windows Security Error 0x80073b01

You try to install or update an app from the Microsoft Store, and Windows Security throws error 0...

Fix Windows Defender High CPU Usage When Scan Stuck

If Windows Defender is using nearly 100% CPU and a scan appears stuck (e.g., progress bar frozen ...

Fix PowerShell Authentication Failed Credentials Error