Learn how to use a USB flash drive or DVD to install or reinstall Windows 7, 8.1, 10, or 11. Find the software download website, product key, and recovery options for your version of Windows.

Learn how to download and install Microsoft 365 or Office 2019, 2016, or 2013 on your PC or Mac. Find out how to activate Office, troubleshoot issues, and switch languages or bit versions.

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 download and install Microsoft 365 or Office 2021 on a PC or Mac with a Microsoft account, work or school account. Find tips, troubleshooting, and activation steps for Microsoft 365 or Office products.

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 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.

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Learn how to check the recent sign-in activity for your Microsoft account and what to do if you see unusual or suspicious activity. Find out how to change your password, update security settings and contact support.

Learn how to update your Surface device with the latest drivers and firmware for Windows 10 or Windows 11. Find links to download packages, check for updates, and troubleshoot issues.

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.