Lync Phones does not access Calendar RRS feed

  • Question

  • I have some problems with Microsoft Lync phones (CX600, aastra 6725ip):

    I can use phone normaly with my lync client. All functions works good

    When I shutdown my pc, and then restart cx600 or 6725ip, phone will automaticaly log on server., but ....

    when I try open calendar on phone I take message: microsoft exchange is unavailable. Please contact you support team.

    On phones I have firmware 7577.250

    I have exchange 2010 sp1

    On my phones I can search tel. numbers from AD.

    On my lync client I dont have messages about problems with connecting to exchange - but still I have that problem on lync phones. I check that on 2-3 users.

    Thanks a lot for help.


    Wednesday, June 29, 2011 4:23 PM

All replies

  • Hi,

    I believe you might find this doc interesting, if you want to troubleshoot the scenario: http://www.microsoft.com/download/en/details.aspx?id=15668


    Lasse Wedø,
    Blog:Tech@work, Twitter: @lawedo

    Please take a second to hit the green arrow on the left if the post was helpful, or mark it as an answer if it resolved your issue.
    • Proposed as answer by Sharon.Shen Friday, July 8, 2011 2:50 AM
    Wednesday, June 29, 2011 6:43 PM
  • If you have a wildcard cert on your exchange web services URL (eg. mail.company.com) then you won't be able to access the calendar from the Lync phones. You may want to check that before you go down the long list of other steps to troubleshoot this issue.




    Matt McGillen, PointBridge - https://blogs.pointbridge.com/Blogs/mcgillen_matt/default.aspx
    • Proposed as answer by Sharon.Shen Friday, July 8, 2011 2:51 AM
    Thursday, June 30, 2011 12:26 AM
  • Hi,

    The following post gives more solutions about the problem. Hope it can help you:


    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
    Thursday, June 30, 2011 2:52 AM
  • Hi,PMarcin,

    Did you use wildcard certificate?

    Have you follow Lasse's suggestion to troubleshoot your issue?

    Any updates please let us know.Thanks!



    Friday, July 8, 2011 2:55 AM
  • I know this is a well dated post, but I am having the issue above and I am using a wildcard cert on exchange. Do I need a SAN cert for autodiscover.domain.com. How would I go about replacing this on the exchange server without stopping owa and the like stopping?

    Alistair Cameron

    Friday, February 22, 2013 3:52 PM