Upload the manifest file to the Microsoft admin center to enable the add-in for all employees.
Before you begin
Ensure that you have downloaded a manifest file for the add-in. For more information, see Create a manifest file.
Role required: Microsoft Admin
Procedure
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Log in to the Microsoft admin center.
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Navigate to .
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On the Integrated apps page, select the Add-ins link.
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On the Add-ins page, select Deploy Add-In.
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Select Next, then select Upload custom apps.
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Select I have the manifest file (.xml) on this device, then select Choose file.
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Select the manifest file that you created for the add-in.
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On the Deploy a new add-in page, select Upload.
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Deploy the add-in from the admin center.