If you had been watching the June 24 event where Windows 11 was announced, you would have heard about the system requirements for the upgrade, especially TPM 2.0.
This is a small chip found on the motherboard of your PC, which encrypts crucial data, so if the machine is stolen, the data on your hard drive is safe – as long as TPM is enabled.
From the perspective of security, it made sense for Microsoft to make it a requirement, but the messaging was handled in a way that confused power users and casual users alike.
