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

How to Fix Windows Defender Not Turning On

Windows Defender (now called Microsoft Defender Antivirus) sometimes refuses to turn on or stay o...

PowerShell Script Permission Denied: Fix Execution Policy and Permissions

When you run a PowerShell script and see "permission denied", the cause is usually one of three t...

Fix 'Permission Denied' When Opening System32 in Command Prompt

Fix Windows Store Error 0x80073cf9 Permission Denied

When you see error 0x80073cf9 in the Windows Store, it usually means the installer can't write to...

How to Fix Git Push Rejected (Non-Fast-Forward)

You run git push and get a rejection: ! [rejected] main -> main (non-fast-forwar...