Update your security processor (TPM) firmware - Microsoft Support
Update your security processor (TPM) firmware. Security Windows 10 Microsoft Defender Antivirus. If you receive a message in Windows Security prompting you to update your security processor or TPM firmware, follow the steps in the "Recommended actions" section below.
Which Surface devices can be upgraded to Windows 11?
The free upgrade to Windows 11 is available based on hardware eligibility, reliability metrics, the age of your Surface, and other factors. If you have a Windows 10 PC that's eligible for the upgrade to Windows 11, Windows Update will let you know when it's available.