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, or use our troubleshooter to help guide you.

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Some Office 2019, Office 2016, and Office 2013 products come with a product key. If yours did, before installing Microsoft 365 for the first time, sign in with an existing or new Microsoft account and enter your product key at office.com/setup. Redeeming your key is what links your account with Microsoft 365 so you only have to do this once.

Passkeys are a replacement for your password. With passkeys, you can sign into your Microsoft personal account, or your work/school account using your face, fingerprint, or PIN. Signing in with a passkey is simple, fast, and helps protect you against phishing attacks.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

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.

For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn. For Microsoft 365 Germany go to portal.office.de. This completes the download of Microsoft 365 to your device. To complete the installation, follow the prompts in the "Install Microsoft 365" section below.

Troubleshooting verification code issues. Avoid and report Microsoft technical support scams. Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

Here's some of the things you can do in the PC Health Check app in Windows: If you’re currently running Windows 10, PC Health Check provides a comprehensive eligibility check for your device to ensure it meets the Windows 11 minimum system requirements.

Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.