Hello,

Having the “EWS not deployed” issue can cause those issues :

  • Unable to change your profile picture in Exchange
  • Unable to get your voicemail
  • Unable to get your conversation history
  • Unable create contacts in Exchange (unified contact store)

EWSNotDeployed

If you are having this issue, try the following things :

  • Try to get your Exchange autodiscover xml with your browser (usually something like : “https://autodiscover.SMTPdomain.com/autodiscover/autodiscover.xml”)
  • If you can get the xml content without getting an Exchange form authentication, you are good with autodiscover. If you are getting a form, change the setting in your Exchange organization or remove the pre-auth in your TMG rule (external access).
  • Try to access your Exchange web services with your browser (usually something like : “https://EXCHANGE_SERVER_HOSTNAME/EWS/Exchange.asmx”)
  • If you are getting a prompt for authentication, you are good. If you are getting a form then same thing as autodiscover, change the setting in your Exchange organization or remove the pre-auth in your TMG rule (external access).

Indeed, when starting your Lync or Skype for Business client, in order to retrieve the EWS URL it is launching an autodiscover request based on your primary SMTP address which is getting thanks to in-band provisioning process.

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