All University accounts are enabled with MFA/2FA - this means occasional security checks at login where you will be required to verify your sign in via either a text code or via the Microsoft Authenticator app. If you get a new phone or tablet, and have not updated your MFA/2FA details, you will not be able to verify your login when next requested. Therefore, you should undertake the process below before you stop using the currently registered device.
If you happen to have lost access to your old device, you will need to contact it.support@hud.ac.uk