Thank you all for replying. Actually this is for my client with a small network that requires not to install anything from the client station.They are frequently infected by worm/Trojan viruses because most of them had admin rights.
A limited user accounts can also install a softwares by changing the directory location like C:\. So if there's no way to restrict this on registry/gpedit would just recommend to get a 3rd party software. Thanks again. Rocky
