IT support often use feature Run as different user for many applications, but in every new Windows version in a new way how to do it.
If in windows XP you could just right click on the app and choose run as…, in Windows 7 you have to hold shift before right click and now in Windows 8 is a new story.
Where to found Run as different user
- click Windows + r for opening run box, type gpedit.msc ( it opens local group policy editor)  
- go to User configuration – administrtive Templates – Start Menu and Taskbar
- Enable Show “Run as different user” command on Start
- open run box again and type gpupdate /force
