Trying to reload my email account on my phone

For an Outlook.com or Microsoft personal email account on a phone, use this sequence:

1. Update the mail app to the latest version. Recurring password or authentication prompts can happen after security standards are updated.
2. Remove the affected account from the phone, then add it again. In Outlook mobile, go to Settings > select the account > Delete Account. Then add the account back so the correct settings are imported.
3. If the account is being added to Apple Mail on iPhone, add it back as Outlook.com. Go to Settings > Mail > Accounts > Add Account > Outlook.com. If it was previously configured another way, it may keep failing authentication.
4. If re-adding in Apple Mail still fails:
   • Remove the account again.
   • Go to Settings > Safari > Clear History and Website Data.
   • Reboot the iPhone.
   • Add the account back and complete the Outlook.com sign-in flow.
5. If the message appears during Microsoft Authenticator approval, check these items:
   • Make sure the Authenticator app is unlocked.
   • Enable notifications for Microsoft Authenticator.
   • Install the latest Authenticator version.
   • Check internet connectivity by switching between Wi‑Fi and mobile data.
   • Make sure the phone date and time are correct.
6. If sign-in still fails, use the Microsoft account sign-in helper tool to identify whether the account, password, username, or verification method is the problem.
7. If the issue continues in Outlook mobile after re-adding the account, use Settings > Help & Feedback > Contact Support.

References:

• After I changed my primary alias on my outlook.com account, I can't log back in
• Can't sign in to the Outlook mobile app
• Outlook and other apps are unable to connect to Outlook.com when using Basic authentication | Microsoft Support
• Authentication did not complete | Microsoft Support
• I can't sign in to my Microsoft account | Microsoft Support