Checklists for software errors, setup, and tool workflows.

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Fix Git SSL Certificate Verify Failed: Unable to Get Local Issuer

When you see fatal: unable to access '...': SSL certificate problem: unable to get ...

Fix Docker Nginx 502 Bad Gateway Upstream Error
When running Nginx as a reverse proxy in Docker, a 502 Bad Gateway error with 'upstream' ...

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...

Fix Windows 10 Shared Folder Access Denied Error
You set up a shared folder on Windows 10, but when you try to access it from another computer, yo...

Docker Compose Ports Not Working: Common Fixes
You've defined ports in your docker-compose.yml, but containers aren't reachable on the e...

Windows 11 Taskbar Icons Missing? Fixes That Actually Work
You boot up Windows 11 and notice the taskbar icons are gone—no Start button, no search, no syste...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Git SSL Certificate Verify Failed: Unable to Get Local Issuer

Fix Docker Nginx 502 Bad Gateway Upstream Error

Fix Git Push Rejected: Non-Fast-Forward Error

Fix Windows 10 Shared Folder Access Denied Error

Docker Compose Ports Not Working: Common Fixes

Windows 11 Taskbar Icons Missing? Fixes That Actually Work

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