This article shows how to enable logging in Outlook 2011 for Mac and Outlook 2016 for Mac.


Outlook for Mac gives an ability to capture behavior of the following Outlook features:

  • AutoDiscover service
  • Microsoft Exchange (folder and item synchronization)
  • Microsoft Exchange Calendar
  • LDAP transactions

In Outlook 2016 for Mac version 15.12.3 and later versions, there is an additional list of features that are also logged:

  • Database
  • IMAP
  • Network Connections
  • Import
  • Upgrade
  • Sync

How to enable logging

Outlook 2011 for Mac

  1. On the Window menu, click Error Log.
  2. In the Errors window, click Gear icon.
  3. Select the Turn on logging for troubleshooting option, and then click OK.
  4. Close the Errors window.

Outlook 2016 for Mac

  1. On the Window menu, click Sync Errors.
  2. In the Sync Errors window, click the Gear icon.
  3. Select the Turn on logging for troubleshooting option, and then click OK.
  4. Close the Sync Errors window.

Once logging is enabled, you should reproduce the issue and then disable logging by returning to Errors window and switching off logging option. If you want to capture issues that occur when Outlook starts or issues with Autodiscover, then you need to restart Outlook once logging was enabled.

Note: it is very important to disable logging once you have reproduced the issue or finished troubleshooting. If logging is not switched off, the log files size will continue to increase and may occupy all free hard-drive disk space. If you need to leave logging enabled for several hours (or days) make sure that you have enough amount of free hard-drive disk space.

Where logs are stored

Log files location is different depending on the edition and version of Outlook for Mac in which the logs were being collected.

The following table below describes location of log files depending on the version:

Outlook for Mac editionVersionLocationFile name
Outlook for Mac 2011 14.0.0 - 14.2.4 ~/Desktop/ Microsoft Outlook_Troubleshooting_0.log
Outlook for Mac 2011 14.2.5 - current ~/Desktop/OfficeLogging/ Microsoft Outlook_Troubleshooting_#.csv
Outlook 2016 for Mac 15.3 - 15.11.2 ~/Library/Group Containers/ UBF8T346G9.Office/OfficeLogging/ Microsoft Outlook_Troubleshooting_#.csv
Outlook 2016 for Mac 15.12.3 - Current ~/Library/Containers/ Data/Library/Logs/ Microsoft outlook-<date>-<time>.log


  • the character combination ~/ in the Location column in this table refers to the Home folder of the user. This folder is located under the Users folder on the root of the hard disk.
  • in Outlook for Mac 2011 version 14.2.4 and earlier versions, data was appended to the same log file for every Outlook session. In Outlook for Mac 2011 version 14.2.5 and later versions and in Outlook 2016 for Mac, every time that you quit and start Outlook when logging is enabled, a new log file is created.

Once you have collected logs of reproduced issues you can contact Support and provide those logs for troubleshooting.