Preconditions
Related command
az vm create / az vm update --disable-capacity-reservation-assignment
az capacity reservation group create / update --reservation-type Open
az vm get-instance-view (surfaces capacityReservationType)
az capacity reservation show --instance-view (surfaces usedReservedCountBySubscription via instanceView.utilizationInfo)
Resource Provider
Microsoft.Compute/virtualMachines, Microsoft.Compute/capacityReservationGroups
Description of Feature or Work Requested
Add Azure CLI support for the Open Capacity Reservation (OCR) feature introduced in Compute api-version 2026-04-01. OCR lets a VM implicitly consume capacity from a matching capacity reservation group (matching VM size and zone) without explicitly associating it, and lets a VM explicitly opt out of any capacity reservation. Adds a new --disable-capacity-reservation-assignment input on az vm create / az vm update , a new Open value for the capacity reservation group --reservation-type , and surfaces two new read-only outputs: capacityReservationType on the VM instance view and usedReservedCountBySubscription on capacity reservation utilization (via instance view). See https://aka.ms/CapacityReservation.
Minimum API Version Required
2026-04-01
Swagger PR link / SDK link
Azure/azure-rest-api-specs#44376
Request Example
Azure/azure-rest-api-specs#44376
• .../Compute/stable/2026-04-01/examples/virtualMachineExamples/VirtualMachine_Create_WithCapacityReservationAssignmentDisabled.json
• .../Compute/stable/2026-04-01/examples/capacityReservationExamples/OpenCapacityReservationGroup_CreateOrUpdate.json
• .../Compute/stable/2026-04-01/examples/capacityReservationExamples/OpenCapacityReservation_Get.json
• .../Compute/stable/2026-04-01/examples/virtualMachineExamples/VirtualMachine_Get_InstanceView.json
Target Date
8/15/2026
PM Contact
tferdous@microsoft.com
Engineer Contact
btyutyunik@microsoft.com
Additional context
No response
Preconditions
Related command
az vm create / az vm update --disable-capacity-reservation-assignment
az capacity reservation group create / update --reservation-type Open
az vm get-instance-view (surfaces capacityReservationType)
az capacity reservation show --instance-view (surfaces usedReservedCountBySubscription via instanceView.utilizationInfo)
Resource Provider
Microsoft.Compute/virtualMachines, Microsoft.Compute/capacityReservationGroups
Description of Feature or Work Requested
Add Azure CLI support for the Open Capacity Reservation (OCR) feature introduced in Compute api-version 2026-04-01. OCR lets a VM implicitly consume capacity from a matching capacity reservation group (matching VM size and zone) without explicitly associating it, and lets a VM explicitly opt out of any capacity reservation. Adds a new --disable-capacity-reservation-assignment input on az vm create / az vm update , a new Open value for the capacity reservation group --reservation-type , and surfaces two new read-only outputs: capacityReservationType on the VM instance view and usedReservedCountBySubscription on capacity reservation utilization (via instance view). See https://aka.ms/CapacityReservation.
Minimum API Version Required
2026-04-01
Swagger PR link / SDK link
Azure/azure-rest-api-specs#44376
Request Example
Azure/azure-rest-api-specs#44376
• .../Compute/stable/2026-04-01/examples/virtualMachineExamples/VirtualMachine_Create_WithCapacityReservationAssignmentDisabled.json
• .../Compute/stable/2026-04-01/examples/capacityReservationExamples/OpenCapacityReservationGroup_CreateOrUpdate.json
• .../Compute/stable/2026-04-01/examples/capacityReservationExamples/OpenCapacityReservation_Get.json
• .../Compute/stable/2026-04-01/examples/virtualMachineExamples/VirtualMachine_Get_InstanceView.json
Target Date
8/15/2026
PM Contact
tferdous@microsoft.com
Engineer Contact
btyutyunik@microsoft.com
Additional context
No response