Using Outlook for Android for personal email and calendar management
I’m sorry you’re having trouble accessing your email on your Android phone.
Please update the Outlook app from the Google Play Store, then remove the email account from Outlook and add it again using your full email address and password. If prompted, complete the verification request through your security code or Microsoft Authenticator.
If the issue continues, please let us know whether this is a personal Microsoft account or a work/school account, and confirm whether you can sign in through a web browser.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.