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

If your name, billing address, expiration date, or CVV number has changed for your Microsoft account payment method, you can update it. Update your payment method online. Sign in to the Payment options page with your Microsoft account.

All Outlook Data Files (.pst) and Offline Data Files (.ost) are listed along with the name of the account the files are associated with. If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.

The Link to Windows app is preinstalled on select Samsung, HONOR, Surface Duo, and OPPO devices that are running Android 9.0 or later. On such devices, you can find the Link to Windows app under the Quick Settings menu by swiping down from the top of your screen.

If you're unable to activate Windows 11, the Activation troubleshooter could help. To use the troubleshooter, select Start > Settings > System > Activation , and then select Troubleshoot . Open Troubleshoot settings. You must be signed in as an administrator to use this option.

This feature allows you to access your previously downloaded or synchronized email messages, calendar information, contacts, and tasks without an internet connection. Certain types of accounts, such as POP accounts, store their information in the Outlook Data File (.pst) format.

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

Check warranty status. To check the warranty status for Microsoft accessories like mice, keyboards, cameras, or headsets, contact us . For more detailed info, see Check your Microsoft warranty and create service orders or Manage devices used with your Microsoft account.

Describes an update that adds TLS 1.1 and TLS 1.2 to default security protocols in Windows Server 2012, Windows 7 SP1, and Windows Server 2008 R2 SP1.

Share your calendar in Outlook on the web for business. Calendar delegation in Outlook on the web for business. Manage someone else's calendar in Outlook on the web. Learn about how calendar sharing works in Office 365.