问题:

I have developed an Office 365 Outlook Add-in for the web. It's automatically supported in desktop also. I want to disable the app only for the desktop. I guess we need to change something in Manifest file but I couldn't get any clue. Can anyone help me to achieve this??

回答1:

The Office add-in is aim to cross-platform developing for the Office solution. At present, it doesn't support to limit platform. Here is the specification of “Host“ element which used to specify the Office host application for your reference:

You can refer to here about more detail of host specifying in the manifest. And if you want to the Office add-in to support this feature, you can try to submit the feedback here.

回答2:

Although you cannot limit the platform, you CAN detect the platform that you are on programatically.

https://dev.outlook.com/reference/add-ins/Office.context.mailbox.diagnostics.html

Office.context.mailbox.diagnostics.hostName

Will return Outlook, Mac Outlook or OutlookWebApp.

You could display an error message for the clients you don't want to support. Though this generally goes against a core principle of the platform of "write once, run anywhere"