run a program as a different user in windows 8

I need to run an execueable as a different local user on windows 8.

The tip was found here.

start gpedit.msc and search for User Configuration\Administrative Templates\Start Menu and Taskbar. 

Here lookup Show “Run as different user” and enable it. 

After this start "gpupdate /force".

Now by pressing <shift> and rightclick on the executable you get an additional context entry to run as a 
different user. 

Lookup the user and insert it with <local domain>\<username> and the password.