Learn how to find your BitLocker recovery key, a 48-digit number needed to unlock an encrypted drive in Windows. The recovery key can be attached to your Microsoft account, work or school account, printout, or USB flash drive.

Learn how to use Microsoft Defender to check your device for viruses or malware on Windows, Android, or Mac. Find out the signs of infection, the types of scans, and how to run Microsoft Defender Offline for a deeper scan.

Learn how to create a USB flash drive or DVD to install or reinstall Windows 11, 10, 8.1, or 7. You'll need a reliable internet connection, a blank storage device, and a product key (if applicable).

Find out how to download and install Microsoft 365 or Office 2019, 2016, or 2013 on your PC or Mac. Follow the steps to sign in, choose your language and bit version, and activate your product.

Learn how to manually encrypt a drive or drives on Windows 10 or 11 Pro, Enterprise, or Education edition. Access BitLocker Drive Encryption from the Control Panel and follow the steps to turn on BitLocker and back up the recovery key.

Learn how to diagnose and fix errors in your Outlook mail profile that might prevent you from connecting to your email. Follow the steps for Outlook 2016 or use the Microsoft Support and Recovery Assistant tool.

Learn how to download and install Microsoft 365 or Office 2021 on a PC or Mac with a Microsoft account, work or school account. Find out how to activate, troubleshoot, and change versions of the apps.

Learn how to update your Surface device with the latest drivers and firmware for Windows 10 or Windows 11. Find links for automatic and manual updates, and check your Surface model and OS build.

Learn how to recover your account credentials saved by Microsoft Authenticator on the same device type. Follow the steps to sign in to iCloud, select Restore from backup or Begin recovery, and verify your accounts.

Find the POP, IMAP, or SMTP settings for your Outlook.com account to add it to Outlook or another mail app. Learn how to enable POP or IMAP access, troubleshoot connection errors, and get help from Microsoft.