Exchange Connection Problems

Fix iPhone Mail Repeatedly Requesting Exchange Password

WPS Editor Oct 7, 2026 869 views

Question details

The user needs to stop the built-in iPhone Mail app from continuously prompting for a Microsoft Exchange password after a recent password change.

How to Fix iPhone Mail Repeatedly Requesting Exchange Password

Product: iPhone Mail app
Device & OS: iOS
Scenario: Syncing a personal Microsoft Exchange or Outlook email account with the native iOS Mail application.
Observed behavior: The iPhone Mail app repeatedly displays a password prompt that appears so quickly the device becomes unresponsive, even after entering a new valid password.

Before you start

Ensure your iPhone's operating system is up to date and verify your new Microsoft account credentials by logging into your email via a web browser before adjusting your device settings.

Solution 1Recommended

Delete and Re-add the Account via Outlook.com

Removing the malfunctioning Exchange account and re-adding it using the Outlook.com configuration forces the Mail app to fetch fresh authentication tokens, resolving the continuous prompt loop.

Often, simply updating the password in the Mail app isn't enough because outdated Exchange connection settings or cached credentials remain stuck. Re-adding the account as a standard Outlook.com account provides a smoother authentication process for personal Microsoft accounts.

Open iPhone Settings

Unlock your device, open the Settings app, and scroll down to tap on 'Mail'.

Delete the Problematic Account

Tap on 'Accounts', select the affected Microsoft Exchange or Outlook account, tap 'Delete Account', and confirm your choice.

Add the Account Anew

Return to the 'Accounts' screen, tap 'Add Account', and specifically choose 'Outlook.com' (do not select Microsoft Exchange).

Authenticate and Save

Enter your email address and new password to sign in. Grant the necessary permissions and save the account configuration.

Delete and Re-add the Account via Outlook.com

Data Safety: Deleting the email account from your iPhone Settings does not delete your actual emails; they remain safely stored on the Microsoft servers and will resync automatically.

Solution 2

Generate and Use an App Password

If you have two-step verification enabled on your Microsoft account, the native iPhone Mail app may not support standard login prompts and will require a special App Password.

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Frequently Asked Questions

Why does my iPhone Mail keep asking for my Exchange password even after I changed it?

This happens when the built-in Mail app retains an outdated authentication token or fails to sync properly with Microsoft's servers. Re-adding the account or using an App Password generally clears this error.

Should I choose Microsoft Exchange or Outlook.com when adding a personal email?

For personal Microsoft accounts like @outlook.com or @hotmail.com, you should select the Outlook.com option in iOS Settings. The Microsoft Exchange option is typically reserved for corporate or school accounts.

What should I do if the password pop-up freezes my iPhone?

If the repeated prompt makes your device unresponsive, perform a force restart on your iPhone. Once it reboots, quickly navigate to Settings > Mail > Accounts to delete the problematic account before it has a chance to sync.

Do I need to generate an App Password for the official Outlook app?

No. The official Microsoft Outlook app from the App Store fully supports modern authentication and two-step verification, meaning you only need your regular password and 2FA code.

Outlook & Email Problems