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

UFW Port Closed Despite Allow Rule: Fixes

You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...

Fix Windows Defender Real-Time Protection Grayed Out

You open Windows Security, go to Virus & threat protection, and see that the Real-time protection...

How to Fix Rate Limit Error in CMD: Troubleshooting Steps

You're working in Command Prompt and suddenly see a rate limit error. This typically means you've...

Fix GitHub Actions Docker Push Permission Denied

How to Fix Cloudflare Error 525 Permission Denied

Cloudflare error 525 (SSL handshake failed) often appears as a permission denied message when the...

PowerShell Script Execution Disabled: How to Enable It

If you see an error like 'running scripts is disabled on this system' when trying to run a PowerS...