Monday, December 31, 2012

Snooper Tool Directory

Getting application association failure when clicking on "Analyze Log Files" in "Lync Server 2010 Logging Tool"?

Be sure to install the Snooper Tool in this directory >C:\Program Files\Common Files\Microsoft Lync Server 2010\Tracing

Thursday, December 13, 2012

CSR and Certificate Decoder

Prior to submitting your cert request for Lync Edge External interface, including Reverse Proxy TMG run this web based tool to see contents of the request in plain text. The decoder hash displays the attributes selected in the original request. Also displayed is the X509 v3 SAN field. I use this tool to double check the values before ordering certs http://certlogik.com/decoder

Thursday, December 6, 2012

Lync Calls Failing with error code "ICEWarn=0x12b"

Description: External (Off Net) Lync client tries to make an audio call to an internal user (On Net) and visa versa. The call however does not connect and errors out with  "the call could not be established due to network issues".

Error Code: The specific Lync Client Log file error shows "ms-client-diagnostics: 23; reason=”Call failed to establish due to a media connectivity failure when one endpoint is internal and the other is remote”;CallerMediaDebug="audio:ICEWarn=0x12b


Resolution: Make sure internal (On Net) client devices are not being blocked by firewall on ports 443 and 3478. This can be verfied by telneting from a client device to Edge Server in your perimter on TCP 443. No answer means firewall blocking that port. Same applies to UDP port 3478, it needs to be opened on firewall. To test UDP port 3478you will need to run port query utility from the client to the Edge server (0x000000 means successful, 0x0000002 ect indicates failure).