Boot environment creation fails on Windows Server 2016

Details

Failed to create boot environment on Windows Server 2016

Issue
- When using Windows RE, the boot environment is created and works, but the files stay locked. After a reboot, you can move them. 
- When using Windows PE (ADK), an error prevents boot environment creation. You can't cancel—click the [X] in the Builder window to close it. 

Task Log

07/11/2025 01:50:25.325    0     Succeed to copy folder:C:\Windows\system32\DriverStore\FileRepository\wstorvsc.inf_amd64_dcd20fdead9eb74b 
07/11/2025 01:50:25.341    0 DismAddDriver(C:\Windows\system32\DriverStore\FileRepository\wstorvsc.inf_amd64_dcd20fdead9eb74b\wstorvsc.inf) Failed:80070032(This request is not supported.) Level = ERROR[1813] 
07/11/2025 01:50:25.356    0     Succeed to copy folder:C:\Windows\system32\DriverStore\FileRepository\spaceport.inf_amd64_0eab31bda5588dd5 
07/11/2025 01:50:25.356    0 DismAddDriver(C:\Windows\system32\DriverStore\FileRepository\spaceport.inf_amd64_0eab31bda5588dd5\spaceport.inf) Failed:80070032(This request is not supported.) Level = ERROR[1813] 
...
07/11/2025 01:50:26.707    0     Faild to install driver. Level = ERROR[122] 

DISM Log

2025-07-11 10:50:25, Error                 DISM   API: PID=4020 TID=2344 Cannot install non-signed boot-critical drivers on amd64 images. Set ForceUnsigned to TRUE to override. C:\Windows\system32\DriverStore\FileRepository\wstorvsc.inf_amd64_dcd20fdead9eb74b\wstorvsc.inf - CAddDriverCommandObject::CheckClientAddDriverScenarios(hr:0x80070032)
...
2025-07-11 10:50:25, Error                 DISM   API: PID=4020 TID=2344 Cannot install non-signed boot-critical drivers on amd64 images. Set ForceUnsigned to TRUE to override. C:\Windows\system32\DriverStore\FileRepository\spaceport.inf_amd64_0eab31bda5588dd5\spaceport.inf - CAddDriverCommandObject::CheckClientAddDriverScenarios(hr:0x80070032)

Causes

The issue happens because the default Microsoft drivers shown in the Add Driver dialog can’t be copied. DISM fails due to a problem with the file signatures.

Workaround

In the [Add device drivers] window, uncheck the Microsoft drivers and create the WinRE/WinPE boot environment. Leaving them unchecked won’t affect the boot environment’s operation.

 

Target Product

- Boot Environment Builder 

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