A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This key, which is a 48-digit number, is used to regain access to the drive. You might be prompted for the BitLocker recovery key during startup, due to a security risk or hardware change:

Whether it’s a new job title (congratulations!) or a phone number change, make sure you keep your email message signature up-to-date. If you're using new Outlook, for more information about email signatures, or if you haven’t created one yet, see Add a signature to messages.

Messages that have the encrypt-only policy applied can be read directly in Outlook on the web, in Outlook for iOS and Android, Outlook for Windows versions 2019 and newer, and Microsoft 365. If you're using another mail service, you'll see a message with a link.

Get the steps for changing your home page in Microsoft Edge, Internet Explorer 11, Google Chrome, Firefox, and Safari.

You can remove a hyperlink from a single address, remove many links at once, turn automatic hyperlinks off, and turn off the requirement to press Ctrl to follow a hyperlink.

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

Post questions, follow discussions and share your knowledge in the Outlook.com Community. Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

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

Unblock picture downloads for a single message. You can unblock downloads of linked pictures and other external content for a single message that comes from a trusted source. Choose the InfoBar at the top of the message, and then click Download Pictures.

Support for home products. Depending on your product and if it's still in support, Microsoft support experts are available to help you with a broad selection of support options and able to address product and service challenges for a more personalized experience.