If you are troubleshooting an issue in which you have to view more of this data, you must increase this value.

Starting with the Outlook for Mac 2011 14.3.4 update, the size of the SyncState binary large object (BLOB) of EWS messages increased from 6 kilobytes (KB) to 32 KB and can be increased up to no more than 300 KB. Authentication information is not included in the log files. If you are concerned that the data file contains sensitive or confidential information, you may review the contents of the data file by using text-editing software and then remove the information from the file before you send the data file to support professionals. Microsoft does not use this information to contact users without their consent. This includes user name, sender and receiver's email addresses, and the contents of the user's email messages, notes, tasks, calendar, and contacts. The log file may also contain user information. The following table lists the label for each feature. Each entry has a name that identifies the feature that is being logged.

In Outlook 2016 for Mac version 15.12.3 and later versions, the log file opens in the Console and you can view it while Outlook is running. Label that identifies the feature in the log fileĮxchange (folder and item synchronization) In the Outlook for Mac log collected for Outlook for Mac 2011 and Outlook 2016 for Mac through version 15.11.2, each entry has a name that identifies the feature that is being logged.

Issues that occur when email messages, calendar items, notes, tasks, and meeting requests are sent or received.

The log file contains the following information: If you are a messaging server administrator, you can use the information in the log file to diagnose issues when you troubleshoot. When you collect and send the log file, Microsoft Customer Service and Support uses it to identify issues. 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. In Outlook for Mac 2011 version 14.2.4 and earlier versions, data was appended to the same log file for every Outlook session. ~/Library/Group Containers/ UBF8T346G9.Office/OfficeLogging/ To locate the log, see the following table. Log file locationsĭepending on the edition and version of Outlook for Mac in which the log is being collected, the log name and location will differ. If you must keep logging enabled for several hours or several days in order to capture the issue, make sure that the hard disk has sufficient free space. If logging is not turned off, the log files size will continue to increase. It is important to turn off logging after you complete your troubleshooting and reproduce the issue. If you disable logging manually you must restart Outlook to fully disable logging, otherwise it will continue logging in the background.

Restart Outlook and when prompted to turn off logging select Turn Logging Off.

In the Error window, select the Gear icon.

To enable logging in Outlook for Mac 2011, follow these steps If you disable logging manually, you must restart Outlook to fully disable logging, otherwise it will continue logging in the background.

Restart Outlook and when prompted to turn off logging, select Turn Logging Of.

Restart Outlook and when prompted to turn off logging select Leave Logging On and reproduce the issue you experience and then Quit Outlook to stop the log capture.

Select the Turn on logging for troubleshooting option, and then select OK.

In the Sync Errors window, select the Gear icon.

On the Window menu, select Sync Errors.

More information To enable logging in Outlook 2016 for Mac, follow these steps In Outlook 2016 for Mac version 15.12.3 and later versions, the following features are also logged in addition to those listed earlier: Microsoft Exchange (folder and item synchronization).Outlook for Mac provides the option to enable logging for the following features:

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