Hello,

There pops up notification "You've left the call" while making video or audio call via Skype for Business Web App which drops the connection after 2-3 seconds.

Audio or Video calls between S4B clients working as expected without dropping conversation both internally and externally, but with no way web app conversations couldn't be performed. We have 3 FE servers in Front end pool, and 1 edge server in edge pool. No error found in event viewer related to this problem.

From the Microsoft Support site I see that there was same problem in Lync 2013 server and resolved with May 2015 Cumulative update - https://support.microsoft.com/en-us/kb/3053028

Can you please assist to investigate this issue?

Best Regards,

Mahir

HI Mahir

Exactly, the same issue you are facing with message: "You've left the call" must be resolved after install the May 2015 Cumulative Update with version: 5.0.8308.887 for Lync Server 2013 Web Components Server. If you have Lync Server 2013 I recomend you to install the lastest CU published on 7/10/2015 from URL: http://www.microsoft.com/en-us/download/details.aspx?id=36820

Regards.

Hi Carlos, Thank you for reply. I have Skype for Business 2015 with CU1 installed and have the same problem with s4b web app. May be someone faced with the same problem on S4B 2015 and resolved it somehow?! BR, Mahir

• Edited by Mahir Jumshudov 11 hours 52 minutes ago

Hi Carlos, Thank you for reply. I have Skype for Business 2015 with CU1 installed and have the same problem with s4b web app. May be someone faced with the same problem on S4B 2015 and resolved it somehow?! BR, Mahir

• Edited by Mahir Jumshudov Wednesday, August 12, 2015 7:35 PM

Hi Carlos, Thank you for reply. I have Skype for Business 2015 with CU1 installed and have the same problem with s4b web app. May be someone faced with the same problem on S4B 2015 and resolved it somehow?! BR, Mahir

• Edited by Mahir Jumshudov Wednesday, August 12, 2015 7:35 PM

Hi Carlos,

Thank you for reply. I have Skype for Business 2015 with CU1 installed and have the same problem with s4b web app. May be someone faced with the same problem on S4B 2015 and resolved it somehow?!

BR,

Mahir

• Edited by Mahir Jumshudov 11 hours 35 minutes ago

Hi Carlos,

Thank you for reply. I have Skype for Business 2015 with CU1 installed and have the same problem with s4b web app. May be someone faced with the same problem on S4B 2015 and resolved it somehow?!

BR,

Mahir

• Edited by Mahir Jumshudov Saturday, August 15, 2015 7:51 PM

Hi Carlos,

Thank you for reply. I have Skype for Business 2015 with CU1 installed and have the same problem with s4b web app. May be someone faced with the same problem on S4B 2015 and resolved it somehow?!

BR,

Mahir

• Edited by Mahir Jumshudov Saturday, August 15, 2015 7:51 PM

Hi Friends

i too have this problem . 

when i join a meeting with the link from the invitation sent from outside my company - https://meet.lync.com/xyz , i would not join the call . and say " you ve left the call " . 

as a work around i am use the web app , by adding " ?sl=1 " to the orgininal meeting url .

Please suggest and advice me a solution to this. 

Regards

Omer

Hi Friends

i too have this problem . 

when i join a meeting with the link from the invitation sent from outside my company - https://meet.lync.com/xyz , i would not join the call . and say " you ve left the call " . 

as a work around i am use the web app , by adding " ?sl=1 " to the orgininal meeting url .

Please suggest and advice me a solution to this. 

Regards

Omer

Hello Mahir,

Looks like firewall is not allowing communication, its dropping calls 2-3 sec means ICE is not happing before that calls get drop.

Have you all required port on external firewall.

I had same using palo alto network firewall.

Regards

Balu 

Hello Balu,

In spite of I have disabled firewalls on all frond end and edge servers Skype web app doesn't work both internally and externally.

I see below errors on client side:

11:53:19:376, TL_ERROR, , AVModality, Disconnecting call because ICE renegotiation failed, Lync_Client_Model_Conversation_MediaModality$$BO_4, STACKTRACE::
Lync_Client_Model_Conversation_MediaModality$$BO_4 Lync_Client_Model_Conversation_ConversationMessenger$$BO_0 Lync_Client_Model_Conversation_ConversationMessenger$$8i_0 Lync_Client_Model_Conversation_ConversationMessenger$$LG_0 anonymous anonymous anonymous

Thank you in advance.

Best Regards,

Mahir