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

Fix Cloudflare DNS Not Working on Router Setup

If you've set Cloudflare DNS (1.1.1.1, 1.0.0.1) on your router but devices still can't resolve do...

Fix Windows Defender Connection Timeout Error 0x80070422

If you see error 0x80070422 when opening Windows Defender or running a scan, the message typicall...

Fix Command Prompt DNS Lookup Failed Error 0x80072ee7

How to Fix PowerShell Port Already Allocated Error

When you try to start a TCP listener or run a script that binds to a specific port in PowerShell,...

Fix Windows Update Service Permission Denied Error

You try to start the Windows Update service via services.msc or an elevated command prompt and ge...

Fix Windows Defender Blocked by Group Policy Permission Denied

You try to open Windows Defender Security Center or run a scan, but get an error: "Windows Defend...