Lync 2013 Web App : Web Ticket error

Hi,
I have a Lync 2013 std installed on server 2008 r2, with edge , TMG and Wac server.
When i try to join a meeting with Lync Web App i get the error
There was an error contacting the web ticket service. Service Error !
I have tried several explorer ( chrome ,firefox, IE ), to restart FE, checking certificates, logs, IIS, TMG rules.
I cannot fixed this.
Is anynone has an idea ?
Thanks

Hi Joe,
Would you please tell us more details about this issue?
Have you tried all steps in the above links? Does this happenf or all client machines? Please try to reset IE to test the issue.
If the issue persists, please check event log and try to enabling logging tool for further troubleshooting.
http://blog.schertz.name/2011/06/using-the-lync-logging-tool/
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please
make sure that you completely understand the risk before retrieving any suggestions from the above link.
Kent Huang
TechNet Community Support

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Lync 2013 Web App : Web Ticket error

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