This incident has been resolved.
Preliminary root cause: We identified that calls made during service management operations were failing as a required artifact version data could not be queried. Our investigation focused on the backend compute resource provider (CRP) to determine why the calls were failing, and identified that a required VMGuestAgent could not be queried from the repository.
The VM Guest Agent Extension publishing architecture was being migrated (as part of RDFE migration) to a new platform which leverages the latest Azure Resource Manager (ARM) capabilities
Mitigation: We mitigated impact by marking the appropriate extensions to the correct expected level (in this case, public). Engineers proactively verified the return to full success rate for operations after the updates were completed.
Next Steps: We will continue to investigate to establish the full root cause and prevent future occurrences. Stay informed about Azure service issues by creating custom service health
Thank you for your patience and apologies for any inconvenience caused.
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VMware Horizon Communications Team