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Non-Outlook email programs can't connect to mailboxes that are hosted in Office 365

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When you use an email program other than Microsoft Outlook or Microsoft Outlook Web App to try to connect to a mailbox that's hosted in Microsoft Office 365, you can't connect to the mailbox.

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Install an email program that's supported for accessing mailboxes in Office 365.


This behavior is by design. Currently, only certain versions of Microsoft Outlook and of Microsoft Entourage for Mac are supported to access mailboxes that are hosted in Office 365.

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More information

For more information about the system requirements for Office 365, go to the following Microsoft websites:

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Still need help? Go to the Office 365 Community website.

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Keywords: o365, o365a, o365e, o365022013, after, upgrade, o365062011, pre-upgrade, o365m, o365p, KB2277579

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Article Info
Article ID : 2277579
Revision : 30
Created on : 8/20/2013
Published on : 8/20/2013
Exists online : False
Views : 69