We have a standard XP sp3 build workstation running outlook 2007 talking to exchange 2003 server and OCS 2007 client that communicates to the internet via ISA2007 proxy servers. BTW the OCSR2 server is offsite and we conect to it through the internet. All is running fine, however we are trying to upgrade the desktop client to OCSR2. The issue is that is it seems that the R2 client is havig issues authenticating to the ISA proxies which use domain\username authentication.
My question is why does the NON R2 client connect fine, but the R2 client does not and is there a setting I can change. below is an excerpt from the client log.
05/29/2013|10:37:34.473 13A4:17E0 ERROR :: ASYNC_SOCKET::GetProxyResponse cannot connect to http proxy, status 502
05/29/2013|10:37:34.473 13A4:17E0 ERROR :: ASYNC_SOCKET::OnRecvComplete get proxy response failed error 80ee001c
05/29/2013|10:37:34.473 13A4:17E0 ERROR :: ASYNC_SOCKET::OnError (0x80ee001c) - enter
05/29/2013|10:37:34.473 13A4:17E0 ERROR :: ASYNC_SOCKET::OnConnectError (0x80ee001c) - enter
05/29/2013|10:37:34.473 13A4:17E0 TRACE :: SIP_MSG_PROCESSOR::OnRequestSocketConnectComplete - Enter this: 03BE6E08, callid=(null), ErrorCode: 0x80ee001c
05/29/2013|10:37:34.473 13A4:17E0 ERROR :: Releasing socket and notifying transactions
05/29/2013|10:37:34.473 13A4:17E0 ERROR :: SIP_MSG_PROCESSOR::NotifyRequestSocketConnectComplete - Error: 80ee001c
05/29/2013|10:37:34.473 13A4:17E0 ERROR :: OUTGOING_TRANSACTION::OnRequestSocketConnectComplete - connection failed error 80ee001c
05/29/2013|10:37:34.473 13A4:17E0 TRACE :: CUccServerEndpoint::UpdateEndpointState - Update state from 1 to 0. Status 80EE001C. Status text (null)