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

How to Fix Windows Defender Access Denied Error

If you see an "Access Denied" error when trying to open Windows Defender or run a scan, it usuall...

How to Enable UFW for a Specific IP Address

You have a Linux server with UFW (Uncomplicated Firewall) enabled, and you need to allow or block...

Fix PowerShell Infinite Login Loop in Windows

If you're stuck in a loop where PowerShell opens, closes, and reopens repeatedly, it's usually ca...

SSH Permission Denied (Publickey) on EC2: Setup Fixes

If you're seeing "Permission denied (publickey)" when trying to SSH into an AWS EC2 instance, the...

Fix Microsoft Store Not Working After Windows Update

After a Windows update, you might find that the Microsoft Store won't open, apps fail to download...

Fix Windows Security Authentication Error 0x80070035