Unable to sign msix package: error: This file format cannot be signed because it is not recognized.

[KalyaniParne]

I am trying to sign msix package using self signed certificate, I have created self signed certificate using powershell when I sign the msix file from my local using signtool command (SignTool sign /fd sha256 /a /f D:\test.pfx /p password D:\test.msix) the msix file got signed successfully, but in devops when I use the same certificate getting below error :

SignTool Error: This file format cannot be signed because it is not recognized.

SignTool Error: An error occurred while attempting to sign: C:\__w\1\a\OneLake.msix

Below are the tasks used in yaml file:

- task: AzureKeyVault@2

            displayName: 'Azure Key Vault: MSBIESTier1Testing'

            inputs:

              azureSubscription: '*****'

              KeyVaultName: ****

              SecretsFilter: cert

- task: MSIX.msix-ci-automation-task.msix-packaging.MsixPackaging@1

            displayName: 'MSIX build and package'

            inputs:

              outputPath: '$(Build.ArtifactStagingDirectory)\test.msix'

              solution: '$(Build.SourcesDirectory)\*.sln'

              clean: true

              buildPlatform: x64

              configuration: 'Debug'

              msbuildArchitecture: x64

              msbuildLocationMethod: location

              msbuildLocation: 'C:\Program Files\Microsoft Visual Studio\2022\Enterprise\MSBuild\Current\Bin\MSBuild.exe'

              msbuildArguments: '/v:n /nr:false /flp1:Verbosity=d;LogFile=$(OUTPUTROOT)\logs\msbuild_x64_release.log;Encoding=UTF-8 /flp2:logfile=$(OUTPUTROOT)\logs\msbuild_x64_release.err;errorsonly /bl:$(OUTPUTROOT)\logs\msbuild_x64_release.binlog'

              maximumCpuCount: false

              logProjectEvents: true

  - task: MSIX.msix-ci-automation-task.msix-signing.MsixSigning@1

            displayName: 'Sign MSIX package'

            inputs:

              certificateType: base64

              encodedCertificate: '$(cert)'

Can you please help us here ?

Regards,

Kalyani.

[#2]

Hi @KalyaniParne,

This seems more like a signtool issue. Can you telll us the version(s) of signtool you are using in your local machine and ADO?

[#3]

@Aniket_Banerjee : in my local I could see it is 10.0.22000.0(C:\Program Files (x86)\Windows Kits\10\bin\10.0.22000.0\x86\signtool.exe), I am not sure how to check in ADO but in the logs I could see this "C:\__w\_tasks\MsixSigning_501a9528-7fa4-4cb5-b8da-79ded62b74eb\1.1.1\lib\signtool.exe"

[#4]

Any updates on this issue? I'm encountering the same thing.