I activated the new master password program but don’t think it is working for me. Every time I go to my windows email account, I have to sign in again. and again. and again. Even tho I indicate keep me logged in. Since MSN has a 2 step verification program, this gets annoying. How do I disable the master password program? It came with the Avast clean up program. Thank you.
Have you searched FAQ section? https://support.avast.com/support/home
It seems to me that if you allow your browser to keep MSN cookies and you request that you stay logged-in then you should remain logged in based on your live.com xid cookie setting not withstanding this “new password program” you’ve mentioned which I wouldn’t think should nullify the xid cookie values. ??? Could there be something (i.e. add-ons) that might be clearing your cookies? 
For the first part of your response, all of that is true. For the second part, I am not aware of any add-ons that may be clearing the cookies. If I clear out the cache periodically, I never include the passwords. I kind of like the new Avast browser which is where the password program originated not the clean up program - I guess I will just use my chrome browser to access the outlook site and use the Avast browser for other browsing. Thanks for your thoughts.