Checklists for software errors, setup, and tool workflows.

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Git Merge --allow-unrelated-histories: When and How to Use It

You run git merge and get an error: fatal: refusing to merge unrelated histories...

Fix 'Externally Managed Environment' Error on Linux
If you're on a modern Linux distribution (Ubuntu 23.04+, Debian 12+, Fedora 38+, etc.) and ge...

Fix Windows 11 Installation Assistant Stuck at 99%
Many users report that the Windows 11 Installation Assistant gets stuck at 99% during the upgrade...

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 Problem on Corporate Networks
If you see git SSL certificate problem: unable to get local issuer certificate while...

Fix Git Push Rejected: Non-Fast-Forward Error
You try to push your local commits to a remote Git repository, but Git refuses with: ! [rej...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Git Merge --allow-unrelated-histories: When and How to Use It

Fix 'Externally Managed Environment' Error on Linux

Fix Windows 11 Installation Assistant Stuck at 99%

How to Fix Nginx Redirect Loop from HTTP to HTTPS

Fix Git SSL Certificate Problem on Corporate Networks

Fix Git Push Rejected: Non-Fast-Forward Error

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