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

Checklist to Resolve Windows Activation Invalid Configuration

You see an error saying your Windows activation is invalid due to an invalid configuration. This ...

How to Fix 'Permission Denied' When Running PowerShell as Administrator

You right-click PowerShell and select 'Run as administrator', but instead of an elevated prompt, ...

OpenVPN Connection Failed: Check Firewall Settings

You see "connection failed" in your OpenVPN client log. The server is reachable, but the handshak...

BitLocker Invalid Configuration Sync: Causes and Fixes

You might see a 'BitLocker invalid configuration sync' error when BitLocker reports a mismatch be...

Windows Security Antivirus Not Detecting Threats: How to Fix

If you suspect Windows Security (formerly Windows Defender) is not detecting threats, you might s...

How to Fix Chrome SSL Certificate Error After Update