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    Every time I try to start the OCS Web Conferencing service on an OCS2007 computer I get the following error:

     

    Event Type: Error
    Event Source: OCS MCU Infrastructure
    Event Category: (1022)
    Event ID: 61031
    Date:  9/18/2008
    Time:  16:57:02
    User:  N/A
    Computer: ***********

    Description:
    Failed to start service for the following reasons Value cannot be null.
    Parameter name: listeningUrl

    For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

     

     

    I have not been able to find anything about the listeningUrl parameter that is supposedly set to null.  I get no other errors in any of the event logs.

     

    any information or lead as to what this parameter is or what this error really means would be appreciated.

    Thursday, September 18, 2008 10:13 PM

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    That's because you install ocs in same computer before and not removed clearly, therefore the system may be getting confused and giving a Null value.

     

    Please check by adsiedit.msc:

     

    cn=LS AV MCU,cn=Microsoft,cn=servername,cn=computers,dc=..,dc=..

     

    attribute: msRTCSIP-MCUData

     

    You may see two value:

     

    MCUURL=https://oldserverfqdn:444/Liveserver/AVMCU

    MCUURL=https://serverfqdn:444/Liveserver/AVMCU

     

    Remove the old one.

     

    Thank Rajeev Krishnan of Microsoft.

    Thursday, October 30, 2008 2:34 PM

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    I would suggest you deactivate the role and activate it again. Or, run the create pool step and deploy using the exact same settings to overwrite your configuration.
    Sunday, September 21, 2008 7:33 PM
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    That's because you install ocs in same computer before and not removed clearly, therefore the system may be getting confused and giving a Null value.

     

    Please check by adsiedit.msc:

     

    cn=LS AV MCU,cn=Microsoft,cn=servername,cn=computers,dc=..,dc=..

     

    attribute: msRTCSIP-MCUData

     

    You may see two value:

     

    MCUURL=https://oldserverfqdn:444/Liveserver/AVMCU

    MCUURL=https://serverfqdn:444/Liveserver/AVMCU

     

    Remove the old one.

     

    Thank Rajeev Krishnan of Microsoft.

    Thursday, October 30, 2008 2:34 PM
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    That was it!  I inherited this system and did not realize OCS had been uninstalled and reinstalled before.  Once I removed the old setting I was able to start all the conferencing services without problem.

     

    Thanks!

     

    Tuesday, November 4, 2008 8:52 PM