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How to fix "Error 0x800B0100: The app bundle must be digitally signed for signature validation"

Today I started getting this error:
Error 0x800B0100: The app bundle must be digitally signed for signature validation
After Project->Publish->Create App Packages I start the WACK and soon get the error.

Why am I suddenly getting this error and how can I fix it?
Thanks.

I am curious why WACK and Windows App Certification Kit are not allowed Tags.

dotnet-xamarin
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Do you use xamarin.forms that you get this error? I follow After Project->Publish->Create App Packages I start the WACK and soon get the error., when I click the Project, I cannot find Publish tag like this screenshot. Could you give me more details about it.
105636-image.png


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WillAutioItrax answered

@LeonLu-MSFT Thanks for looking at this. You are right. I a105893-project-publish.jpgm using Xamarin Forms. In My World, the Project drop down looks like this:



project-publish.jpg (102.4 KiB)
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WillAutioItrax answered

@LeonLu-MSFT It looks like I had to Renew the Certificate.
Now I can Build and do WACK.

Still would like to have WACK and Windows App Certification Kit added to the Allowed Tags.
Thanks

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