VbsEnclave sample returns a "80070241 Windows cannot verify the digital signature for this file."

I am currently experimenting with the MS Sample code for Virtualization-Based Security (VBS) and utilizing Azure's Trusted Signing service for signing purposes. Previously, the signing process was successful, and the sample code executed without any issues. However, I have recently encountered a problem where the signing process is generating the signature correctly, but upon attempting to run the code, the following error message is displayed:

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Diagnostic message: D:\TPMs_codes\VBSTest\Enclave_Sample-master\Enclave Host\enclapp.cpp(107)\VbsEnclaveApp.exe!00007FF7372D78B2: (caller: 00007FF7372DA384) ReturnHr(1) tid(ba94) 80070241 Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.
[Run(LoadEnclaveImageW(Enclave, L"vbsenclave.dll"))]

If you developer-signed the DLL, make sure that you have enabled test signing.
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Could anyone provide guidance or suggest potential solutions to resolve this issue?

Note:

• I am doing this on a x64 machine in Win10 and Win11 both, and have met all the requirements listed here:
  https://learn.microsoft.com/en-us/windows/win32/trusted-execution/vbs-enclaves#development-prerequisites
  This issue occurred on both Win10 and Win11.
• I followed the guide below:
  https://learn.microsoft.com/en-us/windows/win32/trusted-execution/vbs-enclaves-dev-guide

Start at Enclave Host/enclapp.cpp line 107, where LoadEnclaveImageW reports the signature error, and compare the sample's behavior with the VBS enclave development prerequisites and developer guide linked in the issue. Reproduce the failure on the stated Windows versions and identify a confirmed signing or verification resolution; the issue currently does not define a code change or test for completion.