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

Windows Security App Not Opening as Administrator: Fixes

When you try to open the Windows Security app and it fails to launch, often with no error message...

Fix Windows Update Error 0x80070002

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

Chrome Startup Crash When Opened from Task Manager

You click 'Run new task' in Task Manager, type 'chrome', hit Enter, and Chrome cr...

Fix Nginx 502 Bad Gateway on Docker Ubuntu

Fix ERR_CERT_AUTHORITY_INVALID in Chrome Incognito Mode

You open Chrome incognito and hit a warning: NET::ERR_CERT_AUTHORITY_INVALID. Th...