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

Fix Windows Security Service Unavailable in Windows 11

You open Windows Security and see a red banner: 'Security service unavailable. Restart your devic...

How to Fix Windows Update Download Failure from Ubuntu

If you're running Ubuntu alongside Windows and Windows Update keeps failing to download updates, ...

Fix Chrome Profile File Locked Permission Denied Error

When Chrome suddenly refuses to open and displays an error about a locked profile file or permiss...

Fix PowerShell Cache Clear Permission Denied Error

When you try to clear the PowerShell cache (for example, deleting the $env:Temp\* fi...

Fix Command Prompt Sync Issue with System Clock

Fix Windows Update Service Not Starting Automatically

You open Windows Update to check for patches, but it hangs or shows an error. Often the root caus...