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

Fix Windows Activation Error 0xc004f074: Registry and KMS Setup

Windows activation error 0xc004f074 usually appears on volume-licensed systems that use a Key Man...

Fix Windows Defender Can't Connect to Windows Update

If Windows Defender shows an error saying it cannot connect to Windows Update, it usually means t...

How to Fix PostgreSQL Password Authentication Failed for User

You see psql: error: FATAL: password authentication failed for user "youruser" when ...

Fix KMS Activation Error: Port 1688 Already in Use

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 Security Authentication Failed Event ID 4625

If you're seeing Event ID 4625 in Windows Security logs, it means an account failed to log on. Th...