Checklists for software errors, setup, and tool workflows.

Chrome Sync Not Working on Work Network: Fixes to Try

If Chrome sync stops working when you're connected to your work network, the problem is often...

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

fatal: Unable to create &#...

Fix VSCode Git Auth Failed: Expired Token

You're working in Visual Studio Code, try to push or pull, and see an error like "Git: Au...

Fix 'Windows Cannot Access Shared Folder' in Workgroup

When you see 'Windows cannot access \\ComputerName\ShareName' in a workgroup, it usually ...

Fix Cloudflare 521 Error: SSL Configuration Steps

If you see a Cloudflare 521 error, it means Cloudflare can't establish a TCP connection to yo...

How to Fix Nginx 'Upstream Connection Refused' Error

When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...