This question already has an answer here:
I have found a way to do something (safely remove of OAuth of .NET MVC4 application) on my own. I've searched a lot on the internet about this and can't find how to.
There's any place here that I can put the step by step on Stack Overflow?
-- EDIT --
Thanks for all replies and sorry for not seeing similar questions before asking. Later I'll put the step by step in Answer/Question format on the SO, I think this will help a lot of people.