Checklists for software errors, setup, and tool workflows.

Fix Windows 11 Installation Assistant Stuck at 99%

You're upgrading to Windows 11 using the Installation Assistant, and it gets stuck at 99% for...

Windows 11 Wi-Fi Connected but No Internet: Step-by-Step Fix

You're connected to Wi-Fi, but websites won't load and apps show no internet. This is a c...

Fixing Cloudflare 521 Error: Origin Unreachable

When you see Cloudflare error 521, it means your origin server is refusing the connection from Cl...

How to Enable Windows Defender Real-Time Protection via Group Policy

If Windows Defender real-time protection is turned off and grayed out, it's often because a G...

How to Fix Nginx Redirect Loop from HTTP to HTTPS

If you're seeing an infinite redirect loop when trying to force HTTPS in nginx, the browser u...

Fix Git SSL Certificate Error: Unable to Get Local Issuer Certificate

When cloning or pulling from a Git repository, you may see:

fatal: unable to access...