Home windows 11 has a baffling bug which means it’s not detecting TPM with some processors – and subsequently not recognizing the host PC as supporting the OS – with one CPU hit badly particularly, the favored Ryzen 7 5800X3D.

Neowin (opens in new tab) identified a complete bunch of Home windows customers who’re having a problem whereby they’re failing ‘TPM attestation’ with the consequence that the PC just isn’t supported for operating Home windows 11.

That is regardless of the system getting the all-clear by way of the TPM module being detected as ‘prepared to be used’.

As famous, that is taking place to numerous Ryzen processors (and even Intel fashions in outlying circumstances), and the 5800X3D appears to be extra affected than others. In some circumstances, customers report that with a special CPU, the TPM requirement is handed with no issues.

One one that encountered the bug writes (opens in new tab): “After upgrading my CPU from Ryzen 5 2600 to Ryzen 7 5700X Home windows Safety Chip App experiences ‘Attestation: Not Supported’ however ‘Reminiscence: Prepared’. Within the TPM Console it exhibits that the TPM Module is Prepared to be used.”

They add: “Once I swap again to my previous Ryzen 5 2600 all the things works.”

Evaluation: Come on Microsoft, AMD – this isn’t adequate

This one’s a little bit of a headscratcher for positive, however we now have bought official phrase from Microsoft on the bug.

In a recognized subject filed underneath Home windows Autopilot issues, the software program big notes (opens in new tab): “TPM attestation for AMD platforms with ASP firmware TPM could fail with error code 0x80070490 on Home windows 10 and Home windows 11 techniques. There’s at the moment no replace out there to resolve this subject.”

Now, Home windows Autopilot is a tech utilized by IT groups to deploy a number of Home windows PCs, so not one thing the house person will encounter. However evidently, there are shoppers on the market who’re getting brick-walled by this bug when trying to put in Home windows 11 with sure CPUs.

It’s severely disappointing to listen to that there’s no decision, or extra to the purpose, proof that Microsoft is at the least investigating what’s happening right here. Neither have we bought any phrase from AMD that it’s wanting into the gremlin or making an attempt to discern what’s up.

For affected PCs, it appears the one attainable treatment is to put in a separate TPM module and never depend on the processor’s built-in one. To say that’s removed from best is an understatement.

As one other affected person on Reddit (opens in new tab), who was upgrading from a 5800X – which labored simply nice with Home windows 11 – to a 5800X3D put it: “I’ve searched on-line and there may be bunch of individuals with 5800X3D having very same downside and nobody has any concept why or easy methods to repair it. Some did purchase exterior TPM module, however why the hell would I try this when Ryzen 5800 have one onboard?”

It’s an excellent level certainly. One suggestion we’ve seen (within the above Reddit thread) as a workaround for these upgrading to a brand new CPU which is hamstrung by a TPM attestation fault goes as follows. Put the previous CPU again in, disable TPM, clear the CMOS, reinstall the brand new processor after which flip TPM again on. Take that as a little bit of a wild punt at midnight, although, however one upgrader claims it labored for them.

And it’s extra of a touch than Microsoft or AMD have given us to date, that’s for positive.