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

Windows Security App Not Working After Update: Fixes

After a Windows update, the Windows Security app may fail to open, show a blank window, or displa...

Windows 11 Update Stuck at 0%: Registry Fix Guide

You click 'Check for updates' and see the progress bar stuck at 0% for minutes or hours. ...

Fix Windows Update Error 0x80070002

Windows Update error 0x80070002 usually appears during an update attempt. The system may stall at...

Fix Nginx 502 Bad Gateway with Docker Socket

You have an Nginx container proxying requests to another container via the Docker socket, and you...

Fix Nginx Upstream Connection Refused in Proxy Pass