DEP0700: Registration of the app failed. [0x80080204] error 0xC00CE020: App manifest validation error: The app manifest must be valid as per schema: Line 40, Column 4, Reason: Required attribute 'PhonePublisherId' is missing.

Question

DEP0700: Registration of the app failed. [0x80080204] error 0xC00CE020: App manifest validation error: The app manifest must be valid as per schema: Line 40, Column 4, Reason: Required attribute 'PhonePublisherId' is missing.

I am migrating a UWP app to WinUI. I have ported the coded to the WinUI version and it ran fine. Then I associated this new version with the app in the store:

It went without any errors. However, I got the following error when I tried to run the app again:

DEP0700: Registration of the app failed. [0x80080204] error 0xC00CE020: App manifest validation error: The app manifest must be valid as per schema: Line 40, Column 4, Reason: Required attribute 'PhonePublisherId' is missing.

Could anyone shed some light on this?

Answer 1

Hi @Hong ,

Welcome to Microsoft Q&A!

It is recommended that you add an empty PhonePublisherId in <mp:PhoneIdentity />, like this

<mp:PhoneIdentity PhoneProductId="your PhoneProductId" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>

Thank you.

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