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

Windows Defender Not Working After Update: Checklist

After a Windows Update, Windows Defender (now called Microsoft Defender Antivirus) may stop worki...

How to Reduce PowerShell High Memory Usage

You open Task Manager and see PowerShell consuming 1 GB or more of RAM. This usually happens afte...

Fix Windows Update High Memory Usage & Permission Denied Errors

You're trying to run Windows Update, but your system slows to a crawl—memory usage spikes, and yo...

How to Fix Windows Security Proxy Error

You may see a Windows Security proxy error when trying to access the internet after a network cha...

Fix VirtualBox Kernel Driver Permission Denied on Linux

How to Reinstall Windows Security in Windows 10

If Windows Security is missing, not opening, or showing errors, you can reinstall it without thir...