If your account has been hacked, use our sign-in helper tool below to help guide you to the right solutions. The tool will ask for your email address or phone number, and either show appropriate self-help, or offer the chance to talk to an agent.

Help with a work or school account password. I need to talk to a customer support agent. Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

Add, remove or update an email address or phone number. If you want to make changes to the email addresses or phone numbers associated with your Microsoft account, use our guided support tool below to help you update the right information in the right way.

Mark email as junk or block senders in Outlook.com. Filter junk email and spam in Outlook on the web. When you no longer want to see messages from someone, you can block them so that messages are automatically are moved to the Junk Email folder.

Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Open the Authenticator app. Select (+) in the upper right corner. Point your camera at the QR code provided by your identity provider or follow the instructions provided in your account settings. After your account appears in your Authenticator app, you can use the one-time codes to sign in.

You can resolve problems with Microsoft Authenticator by checking the tips in this article and reviewing some of the known errors. Tips: If you're using mobile data, try switching to Wi-Fi and vice-versa. Make sure Airplane mode is off.

To find a customer service phone number in your country, please click a region and find your country. Note: Support cases for Surface devices may only be initiated online.

This article applies to Office Home & Business, Office Professional, and individually purchased Office apps. To switch an Office install to or from Microsoft 365, see Switch your Office license. How you change the product key depends on your version of Office. Select your Office version from the tabs below.