How to disable all autocorrect in Outlook 2010

How to disable all autocorrect in Outlook 2010 References I am frustrated because the Outlook makes some rather rude and arrogant autocorrections and does so repeatedly even after I go back and undo them. I tried many things to disable the feature, such as turn off Edit -> Substitutions -> Text Replacement as well as all Edit -> Spelling and Grammar options. But it still does it and it makes it downright impossible to override. Is there any way this can be done or is it one of those Microsoft things?