Remove Windows.old folder - Windows Server 2012 R2

This post  is about how to clean a Windows.old folder, when you upgrade Windows the installer create a folder Windows.old , but you can remove this folder. First you need to install a Desktop-Experience, by default this is not installed in Windows Server

>Install-WindowsFeature -name Desktop-Experience -IncludeManagementTools

Reboot the system

>Restart-Computer

Open the Server Manager - Tools - Disk Cleanup

Select the Drive C:
Check de option "Previous Windows installation(s)"

Simple and you safe some GB in your server.