This acticle describes, that the installation prompt pop-up is supposed to be shown to user, if such Add-In is not installed.
(see screenshot below)

This code works as expected with the old Outlook Desktop, but the prompt does not get triggerred in the new Outlook Desktop.
{
"type": "Action.InvokeAddInCommand",
"title": "${replyWithOutlookAddInButton.label}",
"addInId": "${replyWithOutlookAddInButton.addInId}",
"desktopCommandId": "msgReadOpenPaneButton",
"isEnabled": true,
"isPrimary": false,
"tooltip": "${replyWithOutlookAddInButton.tooltip}"
}
Is there something different about the new and the old Outlook Desktop clients?
Feel free to ask for more details
Document Details
⚠ Do not edit this section. It is required for learn.microsoft.com ➟ GitHub issue linking.
This acticle describes, that the installation prompt pop-up is supposed to be shown to user, if such Add-In is not installed.

(see screenshot below)
This code works as expected with the old Outlook Desktop, but the prompt does not get triggerred in the new Outlook Desktop.
Is there something different about the new and the old Outlook Desktop clients?
Feel free to ask for more details
Document Details
⚠ Do not edit this section. It is required for learn.microsoft.com ➟ GitHub issue linking.