After finally getting a build image (see this discussion), the AppVeyor host agent appears to have installed itself and be running. However, when I send jobs to it, it fails to start any of them. I see various logs from AppVeyor host agent including these errors:

First error:

Category: Appveyor.HostAgent.HyperV.WorkerCloud
EventId: 0




[worker-2306-002] Cannot create worker VM

Second error:

Category: Appveyor.HostAgent.HyperV.WorkerCloud
EventId: 0




[worker-2306-002] System.Exception: Error running PowerShell command
   at Appveyor.BuildWorkers.HyperV.HyperVUtility.ExecutePowerShell(String args)
   at Appveyor.BuildWorkers.HyperV.HyperVUtility.CreateVirtualMachine(String vmName, Int32 generation, Int32 ramMB, Int32 cpuCount, Boolean nestedVirtualizationEnabled, String imagePath, Int32 diskSizeGB, Boolean vmqEnabled, Int32 networkVlan, String networkSwitchName, Boolean macAddressSpoofingEnabled, String hardDiskDirectory, Int32 maxIOPS, Int32 maxRamMB, CancellationToken cancellationToken)
   at Appveyor.HostAgent.HyperV.Worker.CreateWorker()

The host system is Windows 11 25H2 (build 26200.7623).

I wanted to see BYOC function before investing time in creating a packer image appropriate for my software..

Is this a known issue? Is there anything I can do to work around it or any other information you need?

Thanks.