Microsoft Authenticator is a mobile app that helps you sign in to all your accounts without using a password. Notes: 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.

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.

Update an Xbox subscription for you or your child. Making sure your Xbox digital subscription is valid for your country or region. Turn on recurring billing for your Xbox subscription. Get help with EA Play for Xbox.

How to change your Microsoft account password. Sign in to Xbox. Find your Microsoft account email address. Secure your account if you think you’ve been hacked. "Sorry, something's wrong with your Microsoft account" error occurs when signing in to Xbox.

Press the Xbox button on your controller to open the guide, and then go to Profile & system > Settings > Account > Subscriptions. Select the subscription that you want to manage. From here, you can view your plan, expiration date, billing history, subscription status, and change how you pay.

To use Microsoft 365 on your new device, you can activate Microsoft 365 as a 1-month trial of Microsoft 365 Family. You can also buy Microsoft 365 or a non-subscription version of Office, add Microsoft 365 to an existing Microsoft 365 subscription, or enter a product key from a new product key card.

Select a different account. You have multiple accounts. Choose the account you want to sign in with. Manage your subscription. Applies ToOutlook.com. You can view or renew your subscriptions at account.microsoft.com. Learn more.

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.

Help for admins of small businesses. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.