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

How to Fix Chrome 502 Bad Gateway Error on Mac

If you see a 502 Bad Gateway error in Chrome on your Mac, it usually means that a server upstream...

Windows Store Error 0x80073cf9: How to Fix Installation Failures

You try to install or update an app from the Microsoft Store, but you get error 0x80073cf9. The a...

Fix FFmpeg Audio Out of Sync in MP4 Files

If you've encoded an MP4 with FFmpeg and noticed the audio drifts out of sync—voice lagging behin...

Fix 'Chrome Not Loading Pages: Permission Denied' Error

If Chrome fails to load pages and displays 'permission denied' in the browser window or developer...

Fix Windows Security Authentication Error 0x80070035

Chrome Extension Install Failed: Common Fixes That Work

You try to install a Chrome extension, but Chrome shows "Install failed" or "Could not install" —...