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

BitLocker Recovery Key Prompt After Windows Update: Fix Guide

You update Windows, restart your PC, and instead of your normal login, you see a blue screen aski...

Fix PowerShell Connection Refused on Localhost

When you run a PowerShell command to connect to a service on localhost and get a 'connection refu...

Fix VirtualBox Kernel Driver Permission Denied on Linux

How to Reset Windows Update Configuration to Default

If Windows Update is stuck, failing with errors, or behaving oddly, the configuration may have be...

How to Fix Windows Security Error 0x80073b01

You may see error 0x80073b01 when opening Windows Security or trying to use its features. It usua...

Windows Security Not Scanning for Viruses: How to Fix

If Windows Security (formerly Windows Defender) is not scanning for viruses, you may see an error...