Checklists for software errors, setup, and tool workflows.

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Fixing Nginx Upstream Connection Refused and Permission Denied

If you see connect() failed (111: Connection refused) or connect() failed (13:...

Fix Git Authentication Failed in VS Code on Linux
You're working in VS Code on Linux, try to push or pull, and get a popup: "Git authentica...

Fix Windows Defender Real-Time Protection Stuck Off in Windows 11
You open Windows Security, see real-time protection is off, click the toggle, and it turns back o...

Fix Git 'index.lock' Error in VS Code
If you see the error 'fatal: Unable to create 'path/.git/index.lock': File exists'...

Fix npm install Permission Denied When Using nvm
If you see 'EACCES: permission denied' when running npm install while using ...

How to Fix Git Push Rejected (Non Fast-Forward Error)
When you run git push and see ! [rejected] with non fast-forward<...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fixing Nginx Upstream Connection Refused and Permission Denied

Fix Git Authentication Failed in VS Code on Linux

Fix Windows Defender Real-Time Protection Stuck Off in Windows 11

Fix Git 'index.lock' Error in VS Code

Fix npm install Permission Denied When Using nvm

How to Fix Git Push Rejected (Non Fast-Forward Error)

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