TPM worked on windows iot-core buld 10.0.16299 RPi-3 but not on build 10.0.17763

Our RPi TPM Module LetsTrust TPM V2 chip SLB 9670 TPM 2.0 FW7.40 worked fine as "Discrete SPI TIS Class TPM on SPI0CS1" on iot-core 10.0.16299 RPi3.

Upgrade to newest preview iot-core 10.0.17763 (to support IoT-Edge) now produces following error when TPM-Configuration is activated in the iot-core Device Portal on the device.

0x800c0005: Invalid manifest: missing Title attribute.

Any ideas where to start here?

EDIT: Same applies for default TPMs in iot-core version 10.0.17* See comment.

I just had this same problem and it ended up being that my Win 10 IoT machine had no internet access and I assume wasn’t able to install the Tpm tools as a result. Once I connected to the Internet the the option to install the Tpm tools showed up and I was able to provision my Azure connection string accordingly.