Now, code 500 isn’t very helpful (general terminal failure) and a quick restart of IIS with iisreset /restart /noforce didn’t solve things.Īfter some digging it turned out the seemingly unrelated KB2264110 pointed in the right direction. SyncFolderItems, GetFolder, GetItem) but not for all requests. I then noticed various EWS requests returned http status code 200 (means OK) but also 500’s, which correspond to “ Internal Server Error”. 08:55:39.477,0xFFFFFFFF,Outlook Exchange Web Services,Info,EWS: Received response on connection=0x7d7005c8 status=200 08:55:39.359,0xFFFFFFFF,Outlook Exchange Web Services,Info,'EWS: Sending request on connection=0x7d31dae8, URL=/EWS/Exchange.asmx, SoapAction=''''' 08:55:49.863,0xFFFFFFFF,Outlook Exchange Web Services,Info,EWS: Received response on connection=0x7dc26638 status=500

08:55:49.861,0xFFFFFFFF,Outlook Exchange Web Services,Info,'EWS: Sending request on connection=0x7d71a648, URL=/EWS/Exchange.asmx, SoapAction='''''

08:55:39.358,0xFFFFFFFF,Outlook Exchange Web Services,Info,EWS: Received response on connection=0x7d31dae8 status=500 08:55:39.355,0xFFFFFFFF,Outlook Exchange Web Services,Info,'EWS: Sending request on connection=0x7dc89be8, URL=/EWS/Exchange.asmx, SoapAction='' ''' After a while I was sent the log file Microsoft Outlook_Troubleshooting_0.log which contained the following excerpt: 08:55:34.392,0xFFFFFFFF,Outlook Exchange Web Services,Info,'EWS: Response data received on thread=0x7d27bdb4, XML data=įirst, Exchange reports version 8.3.297.0 which corresponds with Exchange 2007 SP3 RU9 (EWS can report slightly different version than actual version), so something else was wrong while that’s well above Exchange 2007 SP1 RU4. You can enable logging by checking Window > Error Log > Errors > Settings > Turn on logging for troubleshooting. However, items weren’t updated and contacts and calendar remained empty.Īfter trying and checking some things, I asked to turn on Outlook for Mac’s logging hoping to find something in the Exchange Web Services log (Outlook for Mac 2011 is EWS based). After manually entering the server name, a connection could be established and an initial download of folders and contents took place. However, that couldn’t be right because that user claimed to be running a higher version of Exchange 2007. Note that Outlook 2011 requires Exchange Server 2007 SP1 Update Rollup 4 or later.” When configuring a new account, Outlook for Mac reported “Account cannot be added. I had contact with a Twitter user on an issue with Outlook for Mac 2011 talking against Exchange Server 2007 on Small Business Server 2008.

Microsoft outlook mac 2011 review