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

Fix Windows Security High CPU Usage During Malware Scans

You run a malware scan in Windows Security (formerly Windows Defender) and notice your CPU fan ra...

How to Enable Windows Security in Windows 11

If Windows Security isn't running or you see a message like "Your IT administrator has limited ac...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Replacing Windows Defender on Ubuntu: Practical Alternatives

If you're migrating from Windows and miss the built-in protection of Windows Defender, you'll fin...

Fix Windows Security Connection Timeout in Remote Desktop

You try to connect to a remote PC via Remote Desktop (RDP) and get a message like: "An authentica...

Cloudflare 521 Error After Update: Fixes That Work

If you see a 521 error after updating your web server, Cloudflare can't connect ...