The long-running operation failed. 400; Import-VApp
The certificate used to sign the OVF package is not valid (Invalid)
This issue can occur when the VCDA OVA package is signed with an expired OVF certificate.
In standard VMware vCenter environments, deployments with expired or untrusted OVF certificates can proceed by manually accepting or ignoring the certificate warning.
However, in Azure VMware Solution (AVS):
As a result, the deployment fails during the Import-VApp stage when the OVF certificate is considered invalid.
Older VCDA versions (e.g. 4.7.3 / 4.7.3.1) may fail deployment in AVS due to expired OVF certificates
There is no supported method to bypass OVF certificate validation in Azure VMware Solution (AVS)
Ensure compatibility between VCDA version and VMware.VCDA.AVS module version before deployment