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KumarOne's avatar
KumarOne
Copper Contributor
Mar 29, 2020

MSIX : Modification Package Challenges

Hi,   As part of MSIX Assessments we are trying to explore the option of Applications Redundancy, so we testing few  MSIX Modification packages in our environment and having some challenges. Below ...
Dian Hartono's avatar
Dian Hartono
Icon for Microsoft rankMicrosoft
Mar 30, 2020

Hi KumarOne, 

 

Will it be possible for you to test on a Windows Version 1903? We made an update to the modification package such that file overlay properly works. Also ensure that modification property is set to true in the package manifest: 

<Properties> <rescap6:ModificationPackage>true</rescap6:ModificationPackage> </Properties>

 

More info:

https://docs.microsoft.com/en-us/windows/msix/modification-packages#modification-packages-on-windows-10-version-1903-and-later

 

-Dian 

  • KumarOne's avatar
    KumarOne
    Copper Contributor
    Apr 02, 2020

    Dian Hartono 

     

    Hi Dian,

     

    I'm trying to test the package and installation on 1909 and get's failed with below error. I have created custom self-signed certificate for package creation and testing. 

     

    The packages which were created on 1809 was signed again on 1909 using sign tool and still issue is same

     

    "Either a new certificate must be installed for this app package or you need a new app package with trusted certificates. Your system administrator or the app developer can help. A certificate chain was processed but terminated in a root certificate that isn't trusted (0x800B0109)"

     

    And also i have identified, the same issue with the LabCertificate provided in below location. 

    https://github.com/microsoft/MSIX-Labs/tree/master/MSIXLab

     

    Any assistance will be much appreciated 

     

     

     

    • Dian Hartono's avatar
      Dian Hartono
      Icon for Microsoft rankMicrosoft
      Apr 08, 2020

      Hi KumarOne, 

       

      Looking at the error, it looks like the root certificate is no longer trusted. As you said, this is a self signed app so you need to install the certificate in order for the app to install. 

       

      1. Right click on MSIX file
      2. Click Properties
      3. Click Digital Signatures
      4. Select Signature from the list
      5. Click Details
      6. Click View Certificate
      7. Click Install Certificate
      • jvintzel's avatar
        jvintzel
        Former Employee
        Apr 08, 2020

        If you are installing a self-signed certificate for testing purposes, make sure it goes into the Device store under Trusted People.

         

        John.

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