Hello, thank you for reaching out to Microsoft Q&A.
To confirm, is the issue specifically with the Outlook app on your iPad, correct?
From where did you remove your account (Outlook app, Mail app, or device settings)?
Please try the following steps:
- Open your iPad’s Settings.
- Go to Apps.
- Select the Mail app, then tap Mail accounts.
- Select your Outlook account and tap Delete Account.
- After it’s removed, go back to Settings > Mail > Accounts and tap Add Account.
- Add your Outlook email address and enter your new password when prompted.
- Next, uninstall the Outlook app from your iPad. (Restart your device)
- Go to the App Store, download Outlook again, and reinstall it.
- Open Outlook and try signing in with your updated password.
Let me know if you still can’t sign in to your Hotmail account.