What were you trying to do that didn't work?

Start Win 10 guest with vtpm device attached, check windows Event log

Please provide the package NVR for which bug is seen:

libtpms-0.9.6-7.el10.x86_64
swtpm-0.9.0-2.el10.x86_64
openssl-3.2.2-7.el10.x86_64
qemu-kvm-9.0.0-6.el10.x86_64

How reproducible:

100%

Steps to reproduce

1.  Start Win10 guest with vtpm device
2.  Check Windows Event log
3.  

Expected results

No error in event log

Actual results

Get TPM error 27: initialization failed, TPM might be in failure mode.

This is not reproduced with Win11 guest.

Get-TPMSupporedFeature command pass, get output:

key attestation

and the command doesn't trigger new error message in event log.