I had to replace my Surface because of bad gluing of the screen to the rest, and I shure as heck wasn't going to set it all up again! Setting up a computer is something I only do once for each OS. So I simply took the latest TrueImage backup and restored that. Most of the stuff worked at once. I had a few problems with the IR camera for Hello, but fixed that by removing the latest firmware from Windows and installing it again. But I have one big problem. Bitlocker. I really need to get that working, it's too easy to get "Surface-lifted". So I went through the necessary stuff and rebooted to start the encryption. And before the actual boot I was to enter the recovery key as part of a test for a working system. So I input the numberical key from the file that Bitlocker had saved to my directory on the main house server (protected by a very good firewall). Nope. "The recovery key is incorrect, please enter it again". So I had to press escape to get out of the process and try again. I reset the TPM from Windows, in case it was the change of Surface (which would be equivalent to changing a motherboard) and tried again. New code, still same answer. Does anybody have any idea what this can be?