Contact Support. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help. If you still need help, select Contact Support to be routed to the best support option. Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

Insert your security key into the USB port or tap your NFC reader to verify your identity. Follow the on-screen instructions, based on your specific security key manufacturer. If your key manufacturer isn't listed in the on-screen instructions, refer to the manufacturer's site for more information.

How to use a PivotTable in Excel to calculate, summarize, and analyze your worksheet data to see hidden patterns and trends.

A factor in authentication is a way of confirming your identity when you try to sign in. For example, a password is one kind of factor, it's a thing you know. The three most common kinds of factors are: Something you know - Like a password, or a memorized PIN.

Add or remove a digital signature in Office files. Get a digital ID. Find digital ID or digital signature services. About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

This article explains how to renew your Microsoft 365 subscription for personal or family use and what you can do after you renew. It also provides detailed troubleshooting help. If you need help managing your payment, see Add, update, or remove credit cards and other ways to pay.

If you're having trouble getting your verification code for your personal Microsoft account, see Troubleshooting verification code issues. If your question wasn't answered here, we want to hear from you. Post your question to the Microsoft Authenticator forum to get help from the community.

A digital signature attached to an email message offers another layer of security by providing assurance to the recipient that you—not an imposter—signed the contents of the email message. Your digital signature, which includes your certificate and public key, originates from your digital ID.

If you receive a protected email message sent to the work or school account you use with Microsoft 365 in Outlook or Outlook on the web, the message should open like any other message. You'll see a banner at the top of the message that informs you of any restrictions on the message.

If your organization is using multi-factor authentication (MFA) for Microsoft 365, the easiest verification method to use is the Microsoft Authenticator smart phone app. It's just one click instead of typing in a 6-digit code. And if you travel, you won't incur roaming fees when you use it.