Knowledge base for software setup, errors, and daily tool work.

How to Resolve Cloudflare Origin Certificate Chain Issues

When Cloudflare's edge cannot validate your origin server's certificate chain, visitors m...

Why Cloudflare DNS Changes Aren't Propagating

You updated a DNS record in Cloudflare but the change isn't showing up. Visitors still see th...

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...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix DNS Probe Finished NXDOMAIN After Windows Update

After a Windows update, some users see the error 'DNS_PROBE_FINISHED_NXDOMAIN' in Chrome ...

Fix VSCode Source Control Not Detecting Changes

You're working in Visual Studio Code, you edit a file, but the Source Control view shows no c...