The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.

Learn more about submitting a case review appeal when you want more info about an enforcement action.

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Microsoft Support

Find out more info about what doxing is and how to protect yourself from those who might try to use your private info against you on the Xbox service.

Note: Starting February 2026, we will introduce Jailbreak/Root detection for work/school Entra credentials in Microsoft Authenticator. This change enhances security by preventing Authenticator Entra credentials from functioning on jailbroken or rooted devices. Learn more.

Summary This article provides explanations for why verification codes from Microsoft don't always arrive. It includes a list of the most common causes, and solutions for each one. Reasons why verification codes don't always arrive Read through the list of the most common causes below and see if any of them apply to you, or use our troubleshooter to help guide you. Start