bcdboot.exe failed with code 87!

Hi,

On Azure Stack HCI 22H2 when deploying Hyper-V VM gen 2 with UEFI layout I get error "bcdboot.exe failed with code 87!". It does not happen every time and on every system. Any ideas as to why and how to troubleshoot?

Here's the (scrapped) transcript

Windows PowerShell transcript start Start time: 20230829091249 Username: (removed) RunAs User: (removed) Configuration Name: Machine: (removed) (Microsoft Windows NT 10.0.20349.0) Host Application: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -noExit -Command Invoke-SConfigLogon Process ID: 8000 PSVersion: 5.1.20348.1850 PSEdition: Desktop PSCompatibleVersions: 1.0, 2.0, 3.0, 4.0, 5.0, 5.1.20348.1850 BuildVersion: 10.0.20348.1850 CLRVersion: 4.0.30319.42000 WSManStackVersion: 3.0 PSRemotingProtocolVersion: 2.3 SerializationVersion: 1.1.0.1

Transcript started, output file is C:\Users(removed)\Documents\PowerShell_transcript.(removed).J1uA9K8f.20230829091249.txt

Windows(R) Image to Virtual Hard Disk Converter for Windows(R) Copyright (C) Microsoft Corporation. All rights reserved. Copyright (C) 2019 x0nn Version 10.0.14278.1000.amd64fre.rs1_es_media.160201-1707 VERBOSE: Target Image Version 10.0.20349.1906 DEBUG: 2023-08-29T14:12:49 [(removed)] isUserAdmin? True Confirm Continue with this operation? &Yes Yes to &All &Halt Command &Suspend A DEBUG: 2023-08-29T14:12:56 [(removed)] is Windows 8 or Higher? True Confirm Continue with this operation? &Yes Yes to &All &Halt Command &Suspend A VERBOSE: 2023-08-29T14:13:00 [(removed)] Temporary VHDX path is : c:\ClusterStorage\VOL_1(removed)\Virtual Hard Disks\4de048e3-9158-4069-993f-7247dd6d203c.vhdx VERBOSE: 2023-08-29T14:13:00 [(removed)] Looking for the requested Windows image in the WIM/ESD file... VERBOSE: 2023-08-29T14:13:01 [(removed)] Image 1 selected "Windows Server 2022 Standard" VERBOSE: 2023-08-29T14:13:01 [(removed)] Creating sparse disk... VERBOSE: 2023-08-29T14:13:02 [(removed)] Mounting VHDX... VERBOSE: 2023-08-29T14:13:02 [(removed)] Initializing disk... VERBOSE: 2023-08-29T14:13:03 [(removed)] Creating EFI system partition... VERBOSE: 2023-08-29T14:13:03 [(removed)] Formatting system volume... VERBOSE: 2023-08-29T14:13:06 [(removed)] Setting system partition as ESP... VERBOSE: 2023-08-29T14:13:06 [(removed)] Creating MSR partition... VERBOSE: 2023-08-29T14:13:07 [(removed)] Creating windows partition... VERBOSE: 2023-08-29T14:13:07 [(removed)] Formatting windows volume... VERBOSE: 2023-08-29T14:13:10 [(removed)] Windows path (K:) has been assigned. VERBOSE: 2023-08-29T14:13:10 [(removed)] Windows path (K:) took 1 attempts to be assigned. VERBOSE: 2023-08-29T14:13:11 [(removed)] System volume location: J: VERBOSE: 2023-08-29T14:13:11 [(removed)] Applying image to VHDX. This could take a while... VERBOSE: 2023-08-29T14:14:17 [(removed)] Image was applied successfully. VERBOSE: 2023-08-29T14:14:17 [(removed)] Making image bootable... DEBUG: 2023-08-29T14:14:17 [(removed)] Running bcdboot.exe K:\Windows /s J: /v /f UEFI Confirm Continue with this operation? &Yes Yes to &All &Halt Command &Suspend A DEBUG: 2023-08-29T14:14:25 [(removed)] Return code was 87. Confirm Continue with this operation? &Yes Yes to &All &Halt Command &Suspend Y PS>TerminatingError(): "bcdboot.exe failed with code 87!" Write-LogMessage : 2023-08-29T14:14:40 [(removed)] bcdboot.exe failed with code 87! At C:\DeployVMs\Convert-WindowsImage.ps1:2183 char:13

Write-LogMessage $_ -logType Error


+ CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
+ FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Write-LogMessage
Write-LogMessage : 2023-08-29T14:14:40 [(removed)] bcdboot.exe failed with code 87!
At C:\_Scripts\DeployVMs\Helper\Convert-WindowsImage.ps1:2183 char:13

Write-LogMessage $_ -logType Error


+ CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
+ FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Write-LogMessage

VERBOSE: 2023-08-29T14:14:40 [(removed)] Log folder is (removed) VERBOSE: 2023-08-29T14:14:41 [(removed)] Done.

Windows PowerShell transcript end End time: 20230829091442

x0nn / Convert-WindowsImage

bcdboot.exe failed with code 87! #32