I understand HOW to use it. What I don't understand is WHY it's necessary, and WHEN it's necessary. Sometimes, people suggest installing a program as administrator by right-clicking the .exe and selecting run as administrator. Sometimes, people suggest running a program that's already installed as administrator if it's not working properly. I just don't get it, I'd like to know when I should do it and when it's not necessary. Can somebody please explain this? Or refer me to an article that elaborates on this topic? I looked through the stickies but I didn't see anything other than a guide showing you how to do it.