processor users AMDfor the most part, have been reporting TPM attestation issues on their Windows 11 configurations for some time. The OS would no longer be able to detect said security chip… even when the latter is present.
A new day, a new bug spotted on Windows 11, and this one is proving quite annoying. Forum users from Neowin (but not only) show that the TPM (Trusted Platform Module) attestation system of the OS is, in some cases, compromised. On the machines concerned, which seem to be mostly equipped with AMD Ryzen processors, Windows 11 is no longer able to detect the presence of a TPM security chip, even if the latter is present.
A problem observed for several weeks
Initially identified around mid-March, this bug unfortunately appears to be quite common, points out Neowinand would primarily concern users of the Ryzen 7 5800X3D… even if other AMD Ryzen CPU models also seem to be impacted, and some Intel processor users are also reporting similar difficulties.
Still, the Ryzen 7 5800X3D, visibly the most affected, has no reason to be concerned, at least on paper. This CPU indeed integrates a TPM 2.0 chip, required for the installation of Windows 11.
A problem due to Microsoft… or AMD?
According to Neowin, it is likely that Microsoft is already aware of the existence of this bug. The list of known issues, at least for Windows Autopilot, does indeed indicate that TPM attestation for AMD processors may fail in some cases. The result is an error code “0x80070490”.
Microsoft describes the problem as follows: TPM attestation for AMD platforms with ASP TPM firmware may fail with error code 0x80070490 on Windows 10 and Windows 11 systems. There are currently no updates available to resolve this issue “.
The most important information to remember here is, unfortunately, that Microsoft does not have an immediate solution to fix this bug. AMD, on the other hand, is not much help.
According to Neowin, the firm would not have a solution to this problem either, which at this stage can only be “solved” by going through an autonomous TPM module. A far from ideal solution since it involves an additional expense. Nor can a standalone TPM module be installed on all motherboards, which further reduces the relevance of this alternative.
Source : Neowin
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