view multiple accounts – need a solution

Hello,

I am so disappointed with the decision to not be able to switch between email accounts in outlook.com anymore.  I need a solution.....I have 5 email accounts that I need to look at, at one time vs. having to keep logging out of one and go into another.  Most are my business accounts and need to NOT have to open all these different browsers and use 2 computers at the same time just to read emails and such.

Please provide me a solution......

Thanks!