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

Fix 'Permission Denied' in VS Code Terminal on Linux

You're working in VS Code on Linux, open the integrated terminal, and run a command—only to s...

How to Fix a Detached HEAD in Git Using SourceTree

If you open SourceTree and see a message like “You are in ‘detached HEAD’ state,” it means your w...

Fix Nginx 502 Bad Gateway with Docker Multiple Containers

If you run Nginx as a reverse proxy in front of multiple Docker containers, a 502 Bad Gateway err...

Cloudflare DNS Not Propagating for Subdomain: Fixes

You added a subdomain record in Cloudflare DNS, but it still resolves to the old IP or nothing at...

Fix DNS Probe Finished NXDOMAIN on Router: Step-by-Step

You're browsing and suddenly Chrome shows 'DNS_PROBE_FINISHED_NXDOMAIN'. This means y...

Fix Windows 11 Update Stuck at 0% – SoftwareDistribution Folder