Why Does Outlook automatically log me in without my email address and password?

I believe that the Windows paradigm is that each person using a PC will have his or her own login for that PC; that multiple people won't masquerade as a single user.  Microsoft believes most people want a single experience across their computer and the (Microsoft) cloud, so your Windows credentials are now tied to your Microsoft cloud credentials.  Microsoft believes that once people sign into their computers, they want to be able to seamlessly access their PC assets and their cloud assets without needing separate logins.  For the most part, I think this is a good approach, but it makes using the local and cloud assets more difficult for people who do not wish to follow that paradigm.

If you wish to share a PC as a single user but access cloud services as multiple users, make your username a local user and then make sure you never select the "Keep me logged in" options on web sites and always remember to log out of web sites when you are finished with the sessions.  Granted, it requires some discipline, but it should work satisfactorally.

Is there anyway to change the credentials  so it won't automatically log in?

OK, that does help.  I didn't think of that. 

Is there a way to solve the real problem though?  Is there a setting that would not automatically log the user into the outlook account when they go to outlook.com (without InPrivate).  So far the best solution is to only have a local account.  But then every time you want to add an app you need to provide the account info.

If one user is logged on, and someone wants to access their Outlook.com and uses IE, that person can't even get to a sign on page! 

Of course they can.  All they have to do is to open a new "In Private" browser window.

As I have stated before ," this is happening on all my email accounts through different companies ."

But what I want to add is I have at least one or two times a day where it want do it . I do not know if I did something different or if it was something through Microsoft or internet explorer .If it is something I did maybe I can catch it  and hope to help solve this problem .Thank you all for posting .