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

Fix Windows Defender Real-Time Protection Off via Registry

If you see "Real-time protection is off" in Windows Security and the toggle is grayed out or keep...

How to Change DNS Server to Fix Windows Update Error

If you're seeing Windows Update errors like 0x80072EFD or 0x8024402C, t...

Fix PowerShell 502 Bad Gateway Due to Proxy Configuration

If you're running PowerShell commands that make web requests—like Invoke-WebRequest ...

Fix PowerShell Cannot Connect to Localhost Due to Firewall

When you try to connect to a local service (e.g., a web server, database, or custom application) ...

Fix 504 Gateway Timeout in Google Chrome

You're browsing in Google Chrome and a page fails to load with the message '504 Gateway Timeout'....

Fix 'Invalid Configuration Permission Denied' in Command Prompt