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

Fix Windows Security High Memory Usage (MsMpEng.exe)

You open Task Manager and see Windows Security (the process is MsMpEng.exe) using 500 MB or more ...

Windows Defender Scan Stuck at Certain Percentage: Fixes That Work

If you run a Windows Defender scan and it stalls at the same percentage every time—often 85%, 93%...

Avoid Windows Activation Version Mismatch on Reinstall

You reinstall Windows, enter your product key, and get an error: “This product key does not match...

Fix "Command Prompt Module Not Found Permission Denied"

You type a command like python or npm in Command Prompt and get an erro...

Fix Windows Defender Memory Leak: Step-by-Step Guide

If you notice your system slowing down and Task Manager shows Microsoft Defender Antivirus Servic...

Fix Command Prompt Service Unavailable After Update