Microsoft Authenticator is a mobile app that helps you sign in to all your accounts without using a password. Microsoft Authenticator is not available for PC or Mac as authenticator apps are typically designed for smartphones for security reasons. Learn more.

You can set up an authenticator app to send a notification to your mobile device or to send you a verification code as your security verification method. You aren't required to use the Microsoft Authenticator app, and you can select a different app during the set up process.

Two-step verification (sometimes called multi-factor authentication) helps protect you by making it more difficult for someone else to sign in to your Microsoft account. It uses two different forms of identity: your password, and a contact method (also known as security info).

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Sign in using Microsoft Authenticator. Microsoft Authenticator helps you sign in to your accounts if you've forgotten your password, use two-step verification or multi-factor authentication, or have gone passwordless on your account.

Sign in to Outlook on the web with your work or school account. Go to outlook.office.com. If you're not automatically signed in with your work or school account, follow the prompts to enter the email address and password for your work or school account.

Using the Security info page. If your organization provided you with specific steps about how to turn on and manage your two-factor verification, you should follow those instructions first. Otherwise, you can get to your security verification method settings from the Security info page.

Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

Activate Microsoft 365 or a non-subscription version of Office. Activate Office that's pre-installed on a new Windows device. Activate an Office purchase or offer that's included on a new Windows device. Activate Office from Microsoft Workplace Discount Program. Activate a brand new Office product key.

You can manage all of your Microsoft subscriptions in your Microsoft account dashboard. Select each subscription to change when and how you pay, or to see order history & receipts. Choose your account type.