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This article explains how to update your MFA verification methods if you are changing phone numbers or replacing your phone or mobile device that you use for MFA.
This article provides instructions for setting up Multi-factor Authentication (MFA) for your M365 account on a new or different phone or mobile device.  This article is for use when replacing a phone (or mobile device) that was already set up with both the Microsoft Authenticator app PLUS at least on backup method for MFA verification.
This article explains how to set up the Microsoft Authenticator App for multi-factor authentication (MFA) for M365 using only your mobile phone or mobile device.  Use these instructions if you want to add the Authenticator mobile app but do not have access to a computer.
This article provides instructions for how to use a one-time password code through the Microsoft Authenticator app when you have a weak or no signal to your cell phone or cannot receive notifications.  These instructions only apply if you have already installed the Microsoft Authenticator app and added it as a security method for your M365 Account. See for instructions if needed.
This article walks you through the process for setting up Multi-factor Authentication (MFA) for your M365 account and any services covered by Single Sign On.
This article provides basic recommendations for USNH approved YubiKeys. This article is intended for USNH faculty and stuff and holds the USNH recommended MFA hardware tokens.
This article provides instructions for how to download and install the Microsoft Authenticator app on your preferred mobile device.
This article provides instructions for adding backup Multi-factor Authentication (MFA) methods for your M365 account.  See "Setting up Multi-Factor Authentication (MFA) for M365" - - if you need to set up MFA for M365 for the first time.
This article details the necessary steps to solve the “Network Timeout – The network request timed out. Please try again [2602]” error in iPhones caused by the Microsoft Authenticator application.