Checklists for software errors, setup, and tool workflows.

Fix Windows Security Antivirus Not Turning On

You open Windows Security and see that the antivirus is off, with no obvious way to turn it on. T...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

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

How to Fix Windows SSL Certificate Error in Chrome

If you see "Your connection is not private" or "NET::ERR_CERT_DATE_INVALID" in Chrome on Windows,...

Fix Windows Defender Port Already Allocated in Windows 11

You start a program that needs a specific network port, but Windows 11 tells you the port is alre...

How to Fix Windows Activation Error 0xc004f074

You see error 0xc004f074 when trying to activate Windows, often after a hardware change or when u...

Fixing 'Connection Refused' in Command Prompt Due to Firewall

If you see a 'connection refused' message in Command Prompt when trying to connect to a remote se...