If the EWS external URL and EWS internal URL are blank, it's likely that the autodiscover process is failing. If the page isn't displayed, this is likely a network or DNS issue that prevents resolution of the URL, and network teams should be engaged. You should receive an XML response (in Exchange Server 2010) or a Service page (in Exchange Server 2013). Note If there's no value in the EWS Internal or EWS external URL, go to step 8.Įnter the changed EWS External URL address into a browser, and then enter Exchange credentials if you're prompted to do this. Look for the EWS setting in the EWS External URL field.Ĭhange the value that you found in the EWS External URL setting so that it ends with "Exchange.asmx." For example: Press and hold Ctrl, right-click the Lync icon in the notification area, and then click Configuration Information. Identify any EWS issues that are being experienced in Outlook (free/busy or Out of Office).Ĭonfirm that the EWS URL that the Lync client uses is correct. Ports 443 to the Exchange environment must be open on the firewall and on proxy servers to let Exchange traffic pass freely. Make sure that there's no proxy or firewall that blocks traffic. To do this, use Remote PowerShell to run the following Exchange command: Get-casmailbox | fl EWSEnabled If the value of the EWSEnabled attribute is set to FALSE, Lync/Skye for Business integration will fail. Make sure that EWS is enabled for the user. Validate Exchange credentials by signing in to Outlook Web Access. Note If these options are unavailable, they may be restricted by a Group Policy setting or by the client policy that's applied to the Lync user. Under Personal Information Manager, make sure that Microsoft Exchange or Microsoft Outlook is selected together with the desired features: To do this, see Skype for Business downloads and updates.Ĭonfirm that the Lync client is configured for Exchange or Outlook integration:
Make sure that the Lync client has the most recent update. The Lync client can't identify the correct autodiscover information. The firewall or proxy blocks necessary traffic.
The Exchange Web Services (EWS) service isn't enabled. Integration with Microsoft Exchange Server or Outlook is disabled. This issue occurs if one or more of the following conditions are true: History, voice mail, and Outlook-related features might be unavailable or out of date until the connection is restored. Lync will attempt to repair the connection until it is fully restored. Lync is experiencing connection issues with the Exchange server. Lync is in the process of determining the location of Exchange Web Services. History, voice mail and Outlook-related features will be unavailable.Ĭannot connect to Exchange Web Services to retrieve Calendar and Out of Office Information. Lync will attempt to retry the connection. Lync cannot connect to the Exchange server.
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