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

Windows Security Proxy Error Checklist: Diagnose & Fix

If you see "Windows Security" proxy errors when trying to access the internet or a network resour...

Checklist for Resolving Windows Security 504 Gateway Timeout

If you see a 504 Gateway Timeout error in Windows Security, it usually means the security service...

PowerShell Command Not Found but Works in CMD

How to Fix Chrome ERR_SSL_PROTOCOL_ERROR

You try to open a website in Chrome and see ERR_SSL_PROTOCOL_ERROR. The page won...

How to Fix Cloudflare DNS Not Resolving on Mac

If you've set Cloudflare DNS (1.1.1.1) on your Mac but websites still fail to load or resolve slo...

How to Fix 'Command Not Found' in Command Prompt

You type a command in Command Prompt and get 'xxx' is not recognized as an internal or exte...