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If you are signing in from a unknown location, Microsoft will ask you to verify your identity by texting you a message or sending you an email. This process normally defaults to Text Message. We will show you how to change your authentication method during this process.

During your first sign-in, you will be asked to provide your cell-phone number as a method of identity verification. This article will walk you through how this process is completed properly.

How to Update your Security Information