Checklists for software errors, setup, and tool workflows.

Windows Update Stuck at 100% Not Installing: How to Fix

You've waited for a Windows update to finish downloading, but it hangs at 100% and won't install....

How to Fix a Stuck Windows Update Cache That Won't Clear

When Windows Update gets stuck on a download or install, the cache can become corrupted or refuse...

How to Disable Windows Defender Permanently

Windows Defender (now Microsoft Defender Antivirus) is enabled by default in Windows 10 and 11. W...

Fix Windows Defender Dependency Conflict in Windows 10

You may see an error like "Windows Defender can't start because a dependency service is not runni...

Certbot Nginx Plugin Install Failures: Common Fixes

When you run certbot --nginx and get an error like "The nginx plugin is not working"...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

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