Problem
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Do I need a certain version of Outlook after the integration is complete?
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Are there any versions that of Outlook that aren’t support with the integration?
Solution
Since its inception, our Microsoft 365 add-in has required a minimum of the following Outlook versions:
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Outlook via Microsoft 365
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Retail perpetual Outlook 2016 and later
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Volume-licensed perpetual Outlook 2021
Note: all the above require Version 1910 (Build 12130.20272) or higher. The minimum version required is dictated by the support for “Outlook add-in API requirement set 1.8”, where “Outlook add-in” means an add-in for Outlook and not our add-in for Outlook’s desktop app. For more information, see Microsoft’s guidance on Outlook client support.
The versions that our Microsoft 365 add-in doesn’t support are:
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Volume-licensed perpetual Outlook 2019
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Volume-licensed perpetual Outlook 2016
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Perpetual Outlook 2013
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Any versions older than the above