This tool allows you to cleanup unnecessary file both on a windows server environment and\or a desktop PC.
This utility is not enabled by default in windows 8 and Windows Server 2012 and you have to enable it manually.
Sometimes its not easy particularly if the O.S. is new to you.
"Disk Cleanup (cleanmgr.exe) is a computer maintenance utility included in Microsoft Windows designed to free up disk space on a computer's hard drive. The utility first searches and analyzes the hard drive for files that are no longer
of any use, and then removes the unnecessary files. There are a number of different file categories that Disk Cleanup targets when performing the initial disk analysis" Wikipedia
This activity will require reboot.
To open the roes and feauture wizard. Lauch the "server manager" by pressing the Windows key
and clicking on the server manage please see Screenshot as shown.
Choose rolebase or feature based installation to install to local machine.
Click "next" all the way to features. Locate "User Interface and Infrastructure". Click on "Desktop Experience"
and install additional required feature.
Make it sure that you reboot the system
Ready to run diskcleanup. See screen shot below.
Below is a sample snapshot of disk cleanup in action.