Using New Outlook on Windows for professional communication and productivity
My dude here has the answer. I have tried everything and nothing worked. I did what he said. It took a little doing because you have to remove all inherited permissions from the folder. After you remove all inherited go back and add yourself and administrator and change those permissions to read only and bam, no more switching. It doesn't stop it from downloading Outlook but it does stop it from switching automatically and it also stopped it from replacing my mail shortcut on the taskbar. You my friend walk on water too I bet. Thank you, I hope others see this response and it helps them too.