Jan 13, 2013 MAPI/EWS - Both are protocols introduced by Microsoft for Exchange that are intended for desktop email clients such as Microsoft Outlook. At this time, Microsoft Outlook 2015 for Mac from Office 365, Outlook 2011 for Mac, Apple Mail and eM Client support EWS. MAPI is supported by Outlook 2016 for Windows and above.
- As a result of this upgrade, Outlook for Mac will now use the server-roamed list of calendars. Upgrade Experience. View free/busy calendars in Mac. Preparing for change. On October 17th, we will to slowly roll out these improvements to Insider Insiders customers, and the initial release will be a small percentage of Outlook for.
- Nov 05, 2015 It is worth pointing out that while Outlook 2013/2016 on PC use MAPI/HTTP or RPC/HTTP to connect to Exchange 2013/2016 servers, both clients on Mac (Mac‘s own Mail client and Microsoft Outlook for Mac) use EWS to connect. Mac Mail would show “Account Error” which read “Unable to connect.
- Anyone who is running Outlook can download, install, and use mail apps from the marketplace. If you want to learn more about creating mail apps, check out the Outlook add-ins documentation or the Make an EWS request sample. EWS and Outlook add-ins. You can use a subset of EWS operations on the Exchange server that hosts the account that runs a.
- Alternatively, you can also use Autodiscover by Ctrl+right clicking the Outlook system tray icon and choosing the Test Email AutoConfiguration. Option: In the Test Email AutoConfiguration tool, enter the target email address and password and click the Test button. The tool will perform Autodiscover and report the EWS endpoint URL if available.
Original KB number: 2872257
Summary
Outlook for Mac provides the option to enable logging for the following 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, the following features are also logged in addition to those listed earlier:
- Database
- IMAP
- Network Connections
- Import
- Upgrade
- Sync
More information
To enable logging in Outlook 2016 for Mac, follow these steps
Enable logging
- On the Window menu, select Sync Errors.
- In the Sync Errors window, select the Gear icon.
- Select the Turn on logging for troubleshooting option, and then select OK.
- 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
To disable logging:
- Restart Outlook and when prompted to turn off logging, select Turn Logging Of. If you disable logging manually, you must restart Outlook to fully disable logging, otherwise it will continue logging in the background.
To enable logging in Outlook for Mac 2011, follow these steps
Enable logging
- On the Window menu, select Error Log.
- In the Error window, select the Gear icon.
- Select the Turn on logging for troubleshooting option, and then select OK.
- Close the Error window.
To disable logging:
- Restart Outlook and when prompted to turn off logging select Turn Logging Off. If you disable logging manually you must restart Outlook to fully disable logging, otherwise it will continue logging in the background.
Note
It is important to turn off logging after you complete your troubleshooting and reproduce the issue. If logging is not turned off, the log files size will continue to increase. 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.
Log file locations
Outlook For Mac Ews Email
Depending on the edition and version of Outlook for Mac in which the log is being collected, the log name and location will differ. To locate the log, see the following table.
Outlook for Mac edition | Version | Location | File 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/com.microsoft.Outlook/Data/Library/Logs/ | Microsoft outlook-<date>-<time>.log |
Note
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.
Outlook For Mac 2019 Ews
Important
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.
Viewing the log file
When you collect and send the log file, Microsoft Customer Service and Support uses it to identify issues. If you are a messaging server administrator, you can use the information in the log file to diagnose issues when you troubleshoot.
The log file contains the following information:
- Issues that occur when email messages, calendar items, notes, tasks, and meeting requests are sent or received.
- Type or severity of errors, if known.
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. The following table lists the label for each feature.
Feature | Label that identifies the feature in the log file |
---|---|
AutoDiscover service | Outlook Exchange Auto Configure |
Exchange (folder and item synchronization) | Outlook Exchange Web Services |
Exchange Calendar | Outlook Calendar |
LDAP transactions | Outlook LDAP |
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. Each entry has a name that identifies the feature that is being logged. The following table lists the label for each feature.
Feature | Label that identifies the feature in the log file |
---|---|
AutoDiscover service | outlook.account.exchange.addaccount.config |
Exchange (folder and item synchronization) | outlook.exchange.ews |
Exchange Calendar | outlook.calendar |
LDAP transactions | outlook.account.ldap |
Database | outlook.database |
IMAP | outlook.account.imap |
Network Connections | outlook.network |
Import | outlook.import |
Upgrade | outlook.database.upgrade |
Sync | outlook.sync |

Note
The log file may also contain user information. This includes user name, sender and receiver's email addresses, and the contents of the user's email messages, notes, tasks, calendar, and contacts. Microsoft does not use this information to contact users without their consent. 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. Authentication information is not included in the log files.
EWS SyncState message size
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. If you are troubleshooting an issue in which you have to view more of this data, you must increase this value. To increase the default value of the SyncState binary large object of EWS messages, follow these steps:
Exit Outlook 2011.
Open Terminal.
To set the SyncState binary large object of EWS messages to a specific size, type the following command in Terminal window:
Note
The placeholder <max bytes> represents a byte value. For example, if you want to change the maximum byte size to 10 KB, you would type the value 10240.
To set the SyncState binary large object of EWS messages back to the default size of 32 KB, type the following command in Terminal window:
Start Outlook, and then enable Outlook logging.
Hi Guys,
has someone an idea what is happening with outlook.com ActiveSync Client in Mac OS X El Capitan?
There is no possibility to add Outlook.com Account in Apple Mail App in Mac OS X El Capitan anymore. The Apple Support doesn't know a lot about it. Even Outlook 2016 creates an IMAP Account (no EAS/RPCoHTTPS/MAPI/MAPIHTTP/AS). That is why even Outlook 2016 don't sync my Contacts and Calendar from Outlook.com. Whats wrong?
Some friends told me that must be a new license trick by microsoft to make live hard to non-Microsoft customers. But I think thats not the problem because iOS9 (also owned by Apple) uses native ActiveSync for Outlook.com in mail app without any problems. Since Microsoft changed hotmail to outlook.com, they moved from BSD Webservers to real Microsoft Exchange Servers, but it still must be the ActiveSync client behind mail Apps in any mobile devices like Microsoft phone or iPhones.
It seems like Mac OS X only support Exchange Web Services. But i heard that outlook.com customers don't have EWS support. Only office365 customers have. Does anybody know how to active EWS in outlook.com?
What will happen in future?
_______________________________________________
Hat jemand eine Idee was mit der Mail App in Mac OS X El Capitan passiert? Wieso kann man keine outlook.com Konten einbinden, währen es am iPhone funktioniert? Ich kann mir nicht vorstellen das es mit Lizenzen verbunden ist, weil sonst die Lizenz für das iPhone ja auch fehlen würde. Sogar Outlook 2016 bindet die Outlook.com Konten als IMAP ein - deshalb funktioniert kein Kalender und keine Kontaktsynchronisation! Soweit ich weiss benutzt Outlook.com ActiveSync. Dies scheint auf dem Mac nicht zu gehen (eventuell weil ActiveSync nur für Mobile Geräte gedacht ist). Weiss jemand was da genau los ist und wie dieses Drama weitergehen soll?
Danke im Voraus
MfG
Outlook 2016 For Mac Ews
Sergej
MacBook, Exchange Mapi HTTPs ActiveSync RPC
Outlook 2016 For Mac
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