Learn how to update your security processor or TPM firmware to protect Windows 10 and your device from attacks by malicious software.

PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC. How to open PC Health Check.

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track. To do this, follow these steps: Open an elevated command prompt.

When you are prompted to enter a BitLocker recovery key, take note of the first 8 digits of the recovery key ID. The recovery key ID helps identifying which recovery key to use, in case you have more than one. Where can I find a BitLocker recovery key?

You'll find direct links to downloadable packages that contain driver and firmware updates for Surface devices. You'll also find a section about imaging for IT professionals. To prepare for updates: Attach your Surface Type Cover or Surface Dock (if you have one) so it gets the latest updates, too. Make sure you have an internet connection.

For Surface Hub 2S and Surface Hub 3, see Reset & recovery for Surface Hub 2S & Surface Hub 3 for specifics on which recovery images are support for each device model.

Most PCs that have shipped in the last 5 years are capable of running Trusted Platform Module version 2.0 (TPM 2.0). TPM 2.0 is required to run Windows 11, as an important building block for security-related features.

Windows devices that has Unified Extensible Firmware Interface (UEFI) based firmware can run with Secure Boot enabled. The Secure Boot Forbidden Signature Database (DBX) prevents UEFI modules from loading. This update adds modules to the DBX. A security feature bypass vulnerability exists in secure boot.

These new features will remain dormant until they are turned on through the “enablement package,” a small, quick-to-install “master switch” that activates the Windows 11, version 23H2 features.

Restore deleted files and folders or restore a file or folder to a previous state. Navigate to the folder that used to contain the file or folder, right-click it, and then select Restore previous versions. If the folder was at the top level of a drive, for example C:\, right-click the drive, and then select Restore previous versions.