Hi John Abercrombie,
Welcome to Microsoft Q&A.
This behavior can sometimes occur after a password change, or when the Outlook mobile app doesn’t immediately register an updated password.
On your Android phone, please try these quick steps:
If the Next / Sign in button remains greyed out:
- Tap the eye (Show password) icon, if available, or
- Delete the last character of the password and type it again, this often re‑enables the button
- Double‑check that there’s no extra space at the end of the password (common with autofill or copy/paste)
Then try refreshing the app state:
- Force close Outlook: Settings > Apps > Outlook > Force stop, then reopen it
- Clear the cache: Settings > Apps > Outlook > Storage > Clear cache
If it’s still stuck, remove and re‑add the account in the Outlook app.
Note: Removing the account here only deletes the sign‑in profile from this phone. It does not delete your email account or any emails from the server.
If possible, please also confirm whether you can sign in successfully at outlook.com using your phone’s web browser with the new password. That helps confirm the account and password are working correctly.
Please let me know if this proves useful to you, or if you would like further assistance.
I'm looking forward to your reply.
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