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outlookadd-in

outlook add-in not working in read mode

My Outlook Add-in works fine in compose mode, but it always not clickable in read mode, However, all my other colleges' outlook add-in work fine both in compose and read mode, does anyone know this issue? enter image description here

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Solution

  • From Outlook Add-ins overview ...

    Outlook does not activate add-ins if the current message item, in a compose or read form, is one of the following:

    • Protected by Information Rights Management (IRM), in S/MIME format or encrypted in other ways for protection. A digitally signed message is an example since digital signing relies on one of these mechanisms.

    • A delivery report or notification that has the message class IPM.Report.*, including delivery and Non-Delivery Report (NDR) reports, and read, non-read, and delay notifications.

    • A draft (does not have a sender assigned to it), or in the Outlook Drafts folder.

    • A .msg or .eml file which is an attachment to another message.

    • A .msg or .eml file opened from the file system.

    • In a shared mailbox, in another user's mailbox, in an archive mailbox, or in a public folder.

    • Using a custom form.

    You most likely have one of the situation listed above, for example use a custom form or messages are digitally signed, use of public folders, etc.