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

How to Check DNS Configuration for Windows Activation

If Windows activation fails with an error like “0x8007232B” or “DNS name does not exist,” the pro...

How to Fix '404 Not Found' File Path Errors in CMD

PowerShell Dependency Conflict Checklist

When you run a PowerShell script or import a module and hit an error about a dependency conflict—...

Fix Remote Desktop Lag on Ubuntu: Practical Steps

If your remote desktop session on Ubuntu feels sluggish, you’re not alone. Lag can stem from netw...

Fix Putty Connection Refused on Port 22

You try to connect to a remote server with Putty on port 22, but you get 'Connection refused'. Th...

Troubleshoot 502 Bad Gateway in Windows Terminal: Checklist

You're using Windows Terminal and suddenly see a 502 Bad Gateway error when tryi...