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

Fix Windows Security Authentication Error 0x80070035

Fix Microsoft Store Setup Stuck on Loading Screen

You open the Microsoft Store app for the first time or after an update, and it sits on a spinning...

Windows Defender Service Not Working in Windows 11: Fixes

If Windows Defender won't start or shows a service error in Windows 11, your system may be unprot...

Fix Microsoft Teams High CPU Usage on Windows 10

If you notice your fan spinning up or your PC slowing down while Microsoft Teams is running, high...

Fix Windows Update Permission Denied Error Step by Step

When you try to run Windows Update and get a 'permission denied' error, it usually means the upda...

Fix Windows Activation Authentication Failed: Invalid Product Key

You see "Windows activation authentication failed" or "product key not valid" when trying to acti...