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

Fix High CPU Usage by MsMpEng.exe (Windows Defender)

If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...

Fix Windows Defender Real-Time Protection Turning Off

If you see a notification that Windows Defender real-time protection is off, or it keeps turning ...

Fix Microsoft Store Not Opening After Offline Installer

If you've installed an offline version of the Microsoft Store (for example, on a PC without inter...

How to Fix Command Prompt Error 0x80070005 (Access Denied)