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

Git Merge Conflict: How to See the Diff Between Versions

When you run git merge and hit a conflict, Git pauses and marks the conflicting file...

Fix Nginx 502 Bad Gateway on Docker Ubuntu

Fix 'Permission Denied' in VS Code Terminal for Node.js

You're working in VS Code, run npm install or node app.js, and get ...

Fix Windows 11 WiFi with Internet but No Network Access

After a network reset, some Windows 11 users find their WiFi connects but shows "No internet&...

DNS Probe Finished NXDOMAIN: Fix When ipconfig /flushdns Fails

You're browsing normally and suddenly Chrome shows "DNS_PROBE_FINISHED_NXDOMAIN". You...

Debugging Jest Tests in VS Code: Breakpoints Not Hit

You set a breakpoint in a Jest test file, start debugging, and the test runs to completion but th...