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

Fix 'err tunnel connection failed' on Chrome for Android

You open Chrome on your Android phone and instead of loading a page, you see 'err tunnel connecti...

Fix Windows Defender Real-Time Protection Access Denied

You try to turn on Windows Defender real-time protection but get an 'access denied' message. This...

Fix GitHub Actions Cache Action Permission Denied Error

How to Enable Chrome Auto-Start for a Specific Profile

You want Chrome to open automatically when you log in, but with a specific profile (e.g., your wo...

Fix Chrome Version Mismatch That Breaks Extensions

You update Chrome, and suddenly some extensions stop working. Or you install an extension, and it...

Fix Microsoft Store Blank Screen with Error 0x80073cf0

You open the Microsoft Store and see a blank white screen, or an error code 0x80073cf0 appears. T...