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

Fix Windows Defender Error 0x80073b01 (Crash on Startup)

If Windows Defender crashes on startup with error code 0x80073b01, the antivirus service may be f...

How to Fix the BitLocker Recovery Key Invalid Error

You enter your BitLocker recovery key at the Windows startup screen, but the system says it's inv...

How to Reduce Windows Security CPU Usage

If your system feels sluggish and you notice high CPU usage from 'Windows Security' or 'Antimalwa...

GitLab Runner Stuck in Pending: Log Analysis Guide

When a GitLab Runner shows jobs stuck in "pending" status, it usually means the runner is registe...

How to Fix 'Remote Desktop Command Not Found' Error

Fix PowerShell Ubuntu Package Repository Errors

When installing or updating PowerShell on Ubuntu, you might see errors like E: The reposito...