Applies ToOutlook for Microsoft 365 Outlook 2021 Outlook 2019 Outlook 2016

How to enable add-ins for a shared calendar 

Problem When sending a meeting request from a shared calendar, the Office add-ins aren't enabled on the ribbon.Solutions To use Outlook add-ins while creating a meeting request for a shared calendar, you can use the following workarounds: 

  • If you have full access to the shared mailbox and are not a delegate of it, add the shared mailbox as an additional account in Outlook. 

  • Use Outlook on the web to open the shared mailbox calendar and create the meeting request with the Office add-in. 

Enabling add-ins when sending email from secondary email account

Problem You intend to send a meeting request from your primary email account, but the Office add-ins are enabled on the ribbon. However, when you select a secondary email account, the Office add-ins are not enabled on the ribbon. 

Solution ​​​​​​​To work around this problem, use Outlook on the web to open the shared mailbox calendar and create the meeting request with the Office add-in. 

See also

Office add-ins are not available from Mac shared calendar

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