Windows 10: PTT and TPM - My PC can't see either

I have a Dell XPS 8900. In the BIOS I have activated PTT Security which from what I can tell is the virtualized equivalent of TPM. However, while Device manager sees it, but says that there is a problem with it code 10, tpm.msc can't see it at all. I'm trying to get ready for the insider preview of Windows 11, but this seems to have me stopped in my tracks. Any help appreciated!

:)

 

Reset TPM failed, resulting in slow login (have PTT not TPM)

I have a Lenovo Ideapad 710s. It has Intel PTT (Platform Trust Technology) rather than a dedicated TPM chip.

I got a Windows security center alert telling me that I needed to reset my security processor (clear TPM), so I did, clicking the "clear and restart" button. My computer rebooted, but I didn't get any prompt about clearing the TPM, and when I got to the
Windows 10 cover screen and clicked to get to the login screen, it took about 2 minutes for the login boxes to appear. It now does this every time I reset the computer. Further, the TPM security alert is still there, so the reset failed.

I have checked my bios and it's the latest version. I went into the bios to double-check that I don't have TPM, and the only related security option is one to turn PTT on or off. And when I go to tpm.msc, it verifies that this computer doesn't have TPM.

I don't really care about whether my PTT/TPM gets cleared, I just want my login screen to stop taking so long to appear. Please help!

Thanks,

Sarah

 

Verify Trusted Platform Module (TPM) Chip on Windows PC


Something I came across not long ago, is Firmware-based Trusted Platform Modules (fTPM). Whereas before in order to take advantage of a TPM you needed to have a physical TPM chip soldered to the motherboard, that seems to have changed at some point. You can now have either a Discrete TPM (Physical chip) or Firmware-based TPM.

As per THIS article, fTPM is acknowledged by the Trusted Computing Group (TCG) as a perfectly valid form of TPM and seems to perform much the same functions as a physical TPM. For Intel, their fTPM is called Intel Platform Trust Technology (PTT). I don't know what chips/motherboards/BIOS support PTT, however due to it being Firmware based (as the name suggests) and not requiring a separate physical chip, it means for some devices it's possible to retrospectively add a TPM to devices that didn't have one before.

Looking through the Intel NUC list, it's not just 6th gen Skylake NUC's that it's supported on, but also 5th gen Broadwell NUC's and 4th gen Haswell NUC's too. So if you have a NUC and you have the latest BIOS, then the chances are you have a TPM 2.0 module even if you didn't think you did. You just need to enable 'Intel Platform Trust Technology' in BIOS. As previously mentioned, I don't know what other manufacturers support/will support fTPM too.


The Intel Platform Trust Technology (PTT) setting in Intel VisualBIOS:





With Intel PTT on in BIOS, Device Manager and tpm.msc show a TPM 2.0 module installed.

 

TPM missing in BIOS after tech reinstalled same motherboard

PTT is Intel's implementation TPM. Enable it to Enable TPM.

Intel Platform Trust Technology (PTT): TPM For The Masses