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

Learn why you need to update your security processor or TPM firmware to protect your device from a vulnerability. Follow the steps to download and install Windows updates, firmware updates, and clear your TPM.

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 use the System File Checker tool (SFC.exe) to scan and restore Windows system files that are not working or causing crashes. Follow the steps to run SFC.exe, view the scan results, and manually replace the corrupted files if needed.

Learn how to check for and install updates for Windows 10 and Windows 11, and troubleshoot problems with Windows Update. Find answers to FAQs and links to service packs and activation.

Learn how to get the new features in Windows 10, version 20H2 through a monthly quality update for Windows 10, version 2004. The enablement package is a small, quick-to-install “master switch” that activates the Windows 10, version 20H2 features.

PC Health Check app helps you check your device compatibility, performance, and troubleshoot issues for Windows 11. It also provides updates, backup, and sync features for your Windows PC.

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).

Windows 11, version 23H2 is a scoped feature update that activates new features in Windows 11, version 22H2. Learn how to install the enablement package that turns on the new features with a single restart.

Find the build numbers and release dates for Windows 10, version 20H2 and Windows Server, version 20H2 updates. See the known issues, workarounds, and notes for IT pros and developers.