Looking for logging into the Outlook As Different User site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Outlook As Different User site. After that you can login as usual with your login credentials.
https://support.office.com/en-us/article/switch-to-another-outlook-email-profile-be3b617f-3f64-43d3-9037-8313b431803c
https://support.office.com/en-us/article/access-another-person-s-mailbox-a909ad30-e413-40b5-a487-0ea70b763081
https://social.technet.microsoft.com/Forums/exchange/en-US/53748e96-be13-41a2-86c1-87b037ba9cdd/owa-login-with-another-user-%3Fforum%3Dexchange2010
https://answers.microsoft.com/en-us/msoffice/forum/all/cannot-logout-and-login-as-a-different-user/9f9c4cec-a8f4-4bdf-8762-97f865976112
https://www.techwalla.com/articles/how-to-switch-between-email-accounts-in-outlook
https://superuser.com/questions/389281/outlook-running-as-different-windows-user
https://office.live.com/start/MyAccount.aspx
https://www.extendoffice.com/documents/outlook/2377-outlook-change-default-profile.html
https://community.spiceworks.com/topic/764469-outlook-prompting-for-another-user-s-credentials
https://www.quora.com/How-do-I-quickly-switch-between-different-accounts-on-Office-365-email
https://my.justhost.com/hosting/help/gmail
https://stackoverflow.com/questions/11965172/using-redemption-with-a-different-user-account-from-a-server
https://www.digitalunite.com/technology-guides/computer-basics/windows-10/how-sign-windows-10-using-microsoft-account