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.

Whenever you access, change personal info in, or add new contact info to your Microsoft account, we generate a security code and send it to either an email address or a device number in your account security info.

Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

Your information doesn't actually change in this time. During the 30-day restriction period, we cannot accept further changes or additions to security settings or billing information. Your account is still open and active, and you can still use your email, Skype, OneDrive and devices as usual.

If you're prompted to verify your account when you try to send an email message from Outlook.com, it is because we are trying to protect your account. Outlook.com will occasionally prompt you to verify your account, just to make sure you're still you and your account hasn't been compromised by spammers.

We will ask for an email address or phone number that we can send a verification code to. It doesn't have to be your email or phone number - you just need to be able to access it to verify that it's you trying to sign in.

There are a number of possible explanations for why verification codes don't always arrive. Read through the list of the most common causes, and see if any of them apply to you. Note: This content can help you with your work or school account.

If you've successfully sent and received email from classic Outlook before, and now Outlook repeatedly asks you to reenter your password, one of two things may have happened.

There are a number of possible explanations for why verification codes don't always arrive. Read through the list of the most common causes, and see if any of them apply to you. Note: This content can help you with your work or school account.

If you don't see the email option, it's possible that your organization doesn't allow you to use an email for verification. If this is the case, you'll need to choose another method or contact your administrator for more help.