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

Windows Activation on Ubuntu: Troubleshooting Checklist

If you're running Windows in a virtual machine or dual-boot with Ubuntu and activation fails, the...

Fix 502 Bad Gateway in Chrome: Clear Profile Cache

If you're seeing a 502 Bad Gateway error in Chrome, the problem is often on the server side. But ...

Microsoft Edge Not Responding: Practical Fixes to Try

You click to open a link or type in the address bar, and nothing happens. The window is grayed ou...

How to Unlock a File Locked by Chrome Browser

You try to rename, move, or delete a file, but Windows says it's open in Chrome. Even after closi...

Fix 'Cannot Connect to Exchange Online' in PowerShell

When you run Connect-ExchangeOnline in PowerShell and get an error like "Cannot conn...

Fix 'Windows Security Authentication Failed' for Domain Credentials