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Published: March 14, 2015 | Applies to:

If Outlook 2016 for Mac crashes with error "Microsoft Outlook has encountered a problem and needs to close", then learn how to fix it.

Few days back we told you about the release of Office 2016 for Mac preview, which you can read here:

Get Office 2016 For Mac Public Preview For Free

After installing above mentioned preview edition of Office 2016 for Mac, I realized that Outlook never starts and crashes while doing so. Although, the other components shipped in same package, i.e. Word, PowerPoint, Excel and OneNote worked flawlessly. Its the Outlook only which refuses to open with following error message:

Microsoft Outlook has encountered a problem and needs to close. We are sorry for the inconvenience.

If you’re in the middle of something, the information you were working on might be lost.

Microsoft Outlook Has Encountered A Problem And Needs To Close. We Are Sorry For The Inconvenience

After investing a bit, I observed that the root cause behind this problem is Outlook component of previous edition which was installed on same machine. In my case, I had Office 2011 for Mac already installed. So the settings importer of both Outlook for Mac editions caused such this hitch.

If you’re too victim of this issue, here is how you can fix it.

FIX : Microsoft Outlook Has Encountered A Problem And Needs To Close

1. On your Mac desktop, hit the search icon at a top right corner of screen, and type terminal in the spotlight search box so appears. Pick Terminal from results.

See : Getting Started Guide With Mac OS X Yosemite

Microsoft Outlook Has Encountered A Problem And Needs To Close. We Are Sorry For The Inconvenience

2. In the terminal window shown below, type following commands one by one and hit Enter key after each:

defaults delete com.microsoft.outlook

killall cfprefsd

Microsoft Outlook Has Encountered A Problem And Needs To Close. We Are Sorry For The Inconvenience

Close the terminal window now.

3. Next, try to open Outlook for Mac. Select Not now option/link when you reach this screen:

Microsoft Outlook Has Encountered A Problem And Needs To Close. We Are Sorry For The Inconvenience

In this way we’ve denied to import any data from previous install and already flushed existing data stored on machine. Thus finally you can attempt to open Outlook for Mac, and this time it must start without crashing, as expected.

Microsoft Outlook Has Encountered A Problem And Needs To Close. We Are Sorry For The Inconvenience

Hope this helps! Go here to learn how to add “Permanently Delete” option to file and folder context menus in Mac.


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  • Hubert : Dear Atul Singh, I have tried your steps, but I cannot dele...

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