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Note: Outlook for Mac can only import Unicode-based.pst files, which are the standard format for Personal Folders files for Outlook (for Windows) 2003 and later versions.ANSI-formatted.pst files, also known as Outlook 97-2002 Personal Folders Files, were the standard personal folder format for saving data in Outlook for Windows in versions 97-2002.
- Outlook for Mac. Learn more Outlook for Windows. Learn more Outlook on the web. Microsoft Outlook with a Microsoft 365 subscription is the latest version of Outlook. Previous versions include Outlook 2013, Outlook 2010, and Outlook 2007.
- We no longer support or recommend Outlook 2011. Outlook 2011 is long obsolete. It has numerous bugs and problems, including security problems. If you like the Outlook program, you can get a modern, reliable version from Microsoft for just a few dollars a month. If you’re looking for a free mail program, Mozilla Thunderbird. Is much more reliable than old versions of Outlook.
Microsoft Outlook 2011 For Mac Download

Note
Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.
Microsoft Outlook 2011 For Mac Not Responding
Original KB number: 2830042
Problem
When you try to set up Microsoft Outlook for Mac 2011 to use the archive mailbox feature in Exchange Online for Office 365, your attempt fails.
Microsoft Outlook 2011 For Mac Keeps Freezing
Workaround

To work around this behavior, use Outlook Web App for mail, and apply retention policies in Exchange Online. Use the following settings when you apply the retention policies:
| Tag name | Tag type | Retention age limit (days) | Retention action |
|---|---|---|---|
| Personal 1-years move to archive | Personal | 365 | Move to archive |
| Personal 5-years move to archive | Personal | 1825 | Move to archive |
| *Personal never move to archive | Personal | No age limit | Move to archive |
| *This tag is not enabled by default. Items that have this retention tag are either never moved or never deleted. |
For more information about retention policies in Exchange Online, see Retention tags and retention policies.
Whereas Outlook for Mac 2011 doesn't support the archive feature, Outlook 2016 for Mac does support the archive feature. When you use Outlook 2016 for Mac, you can access your archive and move mail items into your archive.
More information
Microsoft Outlook Mac Download
You can create an archive mailbox for a user's primary cloud-based mailbox. Users can use the archive mailbox (also known as a personal archive) to store historical messaging data by moving or copying messages from their primary mailbox to their archive mailbox. The archived messages reside in the cloud, and users can access the messages by using Outlook 2016 for Mac, Outlook 2013, Outlook 2010, or Outlook Web App.
For more information about the archive mailbox feature in Exchange Online, see Enable or disable an archive mailbox in Exchange Online.
Still need help? Go to Microsoft Community.