About the default app settings in GPOs in Windows Server 2019

Question

For example, if you add multiple lines to the following extension pdf in the configuration file,

<Association Identifier=".pdf" ProgId="MSEdgePDF" ApplicationName="Microsoft Edge" />

<Association Identifier=".pdf" ProgId="AcroExch.Document.2017" ApplicationName="Adobe Acrobat Reader 2017" />

<Association Identifier=".pdf" ProgId="Acrobat.Document.DC" ApplicationName="Adobe Acrobat" />

What is the application flow of the behavior?

Not limited to the above, but set the HTML extension etc. to multiple lines of separate apps

I think it will be the same if you install a separate app for each client、、、

• Only the top is applied, and clients that are not included are not changed.

・ Check in order from the top and change it for the included clients

• Since there are multiple lines, an error occurs and it is not changed for all clients.

I think it is one of them, but just in case, I will ask you here for confirmation as well.

Best regards.