If you have a Surface Pro 2, you’re in for yet another runaround. This time, the controversy surrounds the SP2’s TPM chip – the chip that controls access to BitLocker and some other disk encryption technology.

The SP2 shipped with an older, less-secure version of the TPM firmware. If your machine has an older version of the TPM firmware, you see a Win10 Defender warning like the one in this screenshot.

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