Lync 2013 Mobile Client not Working After CU1 Update

I Updated my Lync 2013 server to CU1 to support Lync 2013 Client Mobility.

now the status is i can not log on from Iphone using Lync 2013 Mobile Client with error"server busy or temporary unavailable" but i am able to log on using Lync mobile client 2010.

any sugges

March 26th, 2013 1:52pm

Is this a single sip domain, have you confirmed your lyncdiscover records ?

From what I understand, Lync mobile needs to go via the reverse proxy wether internal or external. Can you log on to your reverse proxy and monitor traffic? You should see connection attempts from the 2013 client which will help diagnose where the problem lies.

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March 27th, 2013 5:22am

yes it is single domain. i configured lyncdiscover records.
March 27th, 2013 10:43am

Solved by doing the following:

  • Internal DNS, lyncdiscover.<sipdomain> -> Public IP address of Reverse Proxy (for initial lookup)
  • Internal DNS, extpoolFQDN.<sipdomain> -> Public IP address of Reverse Proxy (for Connection)


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March 27th, 2013 2:15pm

Hi Ahmed Question for you regarding VoIP in Saudi - can you answe the below post? https://social.technet.microsoft.com/Forums/office/en-US/d826a174-56c7-45b2-8d9d-edbe261356d1/lync-voip-regulations-saudi-arabia?forum=ocsvoice
February 3rd, 2015 1:13pm

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