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

Clear PowerShell Command Cache After Module Update

After updating a PowerShell module, you may notice that new cmdlets or changes don't appear immed...

Windows Defender Service Troubleshooting Checklist

If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

Fix VirtualBox Kernel Driver Not Installed on Ubuntu

When you try to start a virtual machine in VirtualBox on Ubuntu and see the error 'Kernel driver ...

Fix Windows Update 502 Bad Gateway Due to Firewall Settings

When Windows Update fails with a 502 Bad Gateway error, it often points to a network issue—common...

Fix CMD Service Unavailable Due to Group Policy

Situation

You open Command Prompt and see an error like "Command Prompt has been disabled...