MSIX issue while uploading in Microsoft partner

Question

Hi Gérard ,&nbsp;Thank you for your response. We are facing two issues while uploading the MSIX app to the Microsoft Store:&nbsp;1. If I create the MSIX using the publisher ID provided in the "Product Identity" created by the Microsoft Partner Center, the upload process is successful. However, the MSIX fails to install or launch, showing a publisher and certificate-related issue.&nbsp;2. If I create the MSIX using our company’s publisher details, the MSIX installs and launches successfully. However, it does not upload to the Apps and Games section, displaying a publisher and certificate-related issue.&nbsp;Could you please assist with resolving these issues?Best Regards, &nbsp;Avinash Kumar Paswan &nbsp;Software Development&nbsp;&nbsp;(+91)7905134594

timothy_mangan · Answer

It has been a while since I added a new application to the store, so I might not have this right...

But I believe that you must use the Product Identity created in the store, and the AppXManifest file must also contain the same string. I'm thinking that is the package name. Looking at one of my apps in Partner Center, in the "game overview" Product Identity area, it shows the Package/Identity/Name and Package/Identity/Publisher (and also PublisherDisplayName) and these fields should match the entries in the AppXManifest.

arysonappstoreuploader1 · Answer

Thank you for your response.But I have already done this and also I’ve confirmed that the Package/Identity/Name and Package/Identity/Publisher fields in the AppXManifest match the values in the Microsoft Partner Center, and the MSIX package uploads successfully without issues.However, the problem occurs during installation. The package is not able to install or launch when tested by the Microsoft team. Could this issue still be related to the AppXManifest, or is there something else I should look into to resolve the installation problem?Your guidance on this would be greatly appreciated.

timothy_mangan · Answer

I am confused.  The post said the issue was in uploading to the Microsoft Store.   So is this an issue when Microsoft is testing the package as part of validation, or is this an issue post publishing?

arysonappstoreuploader1 · Answer

I appreciate your prompt reply.To clarify, I’m describing the situation that happens before we publish to the Microsoft Store.Our company's aim is to publish our software on the Microsoft Store so users can purchase and download it directly. To achieve this, our company first created a Microsoft Partner account, which generated a Publisher ID displayed in the Product Identity. Next, we reserved the application name, and then we uploaded our MSIX package in the Apps and Games section for certification.We are now encountering two issues when we create the MSIX using either Microsoft’s Publisher ID or our company’s Publisher ID:1. **Issue with Microsoft’s Publisher ID:**When we upload the MSIX package using the Publisher ID from the "Product Identity" in the Microsoft Partner Center, the upload is successful. However, the package is unable to install or launch on the local system when tested by the Microsoft team due to a publisher and certificate-related issue. The error message reads:_"This app package’s publisher certificate could not be verified. Contact your system administrator or the app developer to obtain a new app package with verified certificates. The root certificate and all immediate certificates of the signature in the app package must be verified (0x800B010A)."_2. **Issue with Our Company’s Publisher Details:**When we create the MSIX package using our company’s publisher details, it installs and launches successfully on the local system. However, it fails to upload to the Apps and Games section, showing an "Invalid Package" error.I hope this clarifies our concerns.Could you assist us in resolving these issues?

timothy_mangan · Answer

(Keeping in mind that I am not from Microsoft)I believe you should be using approach #1.  Did you sign the MSIX package using a certificate that has a Subject field that matches the Package/Identity/Publisher  from the Product Identity and matches the Publisher field of the AppXManifest?

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MSIX issue while uploading in Microsoft partner

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