Cannot use PowerPoint and Whiteboard externally

Question

Hello,
Internally everything works. 
Externally, if I use Lync client, I can share Whiteboard if I use Lync client.  If I use web client, whiteboard does not work.  Powerpoint does not work in both cases.
When I use web client, nothing changes. When I use Lync client, it says Loading, but never loads and does not give me any errors.  I waited for about 40 minutes.
I have one Lync FE in Enterprise pool.  One Lync Edge Server.  One TMG server.  One Office Web Apps (OWA) Server.  I am not sure.  Is it OWA?  I configured internal URL, but did not setup external URL.  Do I need it? 
Do I have to setup external DNS record for this server?  Do I need to setup anything on TMG for this server?
Or do I have another problem that is not related to OWA server?
Thank you.
Thank you. Eric.

Answer 1

This is the Local logs window. Each message is formatted and coded as follows:
Time, Level, Module, Component, Message, Caller [, Stack]
TL_ERROR
TL_WARN
TL_INFO
TL_ASSERT
TL_VERBOSE
TL_NOISE
Dumping Logs: Dump Requested Time - Wed Jul 24 09:30:08 CDT 2013, Reference Time - Wed Jul 24 09:26:34 CDT 2013
9:26:43:663, TL_ERROR, , UCWASpecificCommunication, Request failed:,  Lync_Client_Model_Session_UCWACommunicationContext$$Es_1, STACKTRACE::
Lync_Client_Model_Session_UCWACommunicationContext$$Es_1 Lync_Client_Model_Session_UCWACommunicationContext$onError Lync_Client_Model_Transport_Connection$$M_0 Lync_Client_Model_Transport_Connection$$d_0 anonymous
9:26:43:664, TL_ERROR, , UCWASpecificCommunication, <response>%!PII!{"code":"Conflict","message":"There was a conflict that prevented the operation from starting. Please try again later."}!< \response>,  Lync_Client_Model_Transport_TransportUtils$$Q,
STACKTRACE::
Lync_Client_Model_Transport_TransportUtils$$Q Lync_Client_Model_Transport_TransportUtils$logResponseBody Lync_Client_Model_Session_UCWACommunicationContext$$Es_1 Lync_Client_Model_Session_UCWACommunicationContext$onError Lync_Client_Model_Transport_Connection$$M_0
Lync_Client_Model_Transport_Connection$$d_0 anonymous </response>
9:26:43:665, TL_ERROR, , Conversations, Getting dialin information for conversation 1D82EDC7-0CDB-4E46-B86E-DE1AB164142C failed. StatusCode = genericError,  Lync_Client_Model_Conversation_ConversationMessenger$$Gr_0, STACKTRACE::
Lync_Client_Model_Conversation_ConversationMessenger$$Gr_0 anonymous Lync_Client_Model_Session_UCWACommunicationContext$fireResultsAndFinishContext Lync_Client_Model_Session_UCWACommunicationContext$$Es_1 Lync_Client_Model_Session_UCWACommunicationContext$onError
Lync_Client_Model_Transport_Connection$$M_0 Lync_Client_Model_Transport_Connection$$d_0 anonymous
9:29:8:625, TL_WARN, , AudioVideoUI, No audio device found! Not creating the device selection menu in AV Toolbar.,  Lync_Client_Controls_Audio_AudioPeekViewModel$$2g_4
9:29:8:633, TL_ASSERT, , Utils, Exception occured while firing Async Event event id AudioEvent exception Error: Not implemented ,  Lync_Client_Logging_UtilLogger$assert
9:29:9:152, TL_ERROR, , UCWASpecificCommunication, Request failed:,  Lync_Client_Model_Session_UCWACommunicationContext$$Es_1, STACKTRACE::
Lync_Client_Model_Session_UCWACommunicationContext$$Es_1 Lync_Client_Model_Session_UCWACommunicationContext$onError Lync_Client_Model_Transport_Connection$$M_0 Lync_Client_Model_Transport_Connection$$d_0 anonymous
9:29:9:153, TL_ERROR, , UCWASpecificCommunication, <response>%!PII!{"code":"ServiceFailure","message":"Your request couldn\u0027t be completed.","debugInfo":{"Code":"503","Diagnostics":"2019","errorReportId":"cbcae6d62620497d88404fb3a4527b19"}}!<
\response>,  Lync_Client_Model_Transport_TransportUtils$$Q, STACKTRACE::
Lync_Client_Model_Transport_TransportUtils$$Q Lync_Client_Model_Transport_TransportUtils$logResponseBody Lync_Client_Model_Session_UCWACommunicationContext$$Es_1 Lync_Client_Model_Session_UCWACommunicationContext$onError Lync_Client_Model_Transport_Connection$$M_0
Lync_Client_Model_Transport_Connection$$d_0 anonymous </response>
9:29:9:155, TL_ERROR, , Conversations, Failed to publish join time,  Lync_Client_Model_Conversation_ConversationMessenger$$Lo_0, STACKTRACE::
Lync_Client_Model_Conversation_ConversationMessenger$$Lo_0 anonymous Lync_Client_Model_Session_UCWACommunicationContext$fireResultsAndFinishContext Lync_Client_Model_Session_UCWACommunicationContext$$Es_1 Lync_Client_Model_Session_UCWACommunicationContext$onError
Lync_Client_Model_Transport_Connection$$M_0 Lync_Client_Model_Transport_Connection$$d_0 anonymous
9:29:9:159, TL_ERROR, , AVModality, Can not start audio call without devices,  Lync_Client_Model_Conversation_AVModality$handleOnPluginLoaded, STACKTRACE::
Lync_Client_Model_Conversation_AVModality$handleOnPluginLoaded Lync_Client_Model_Conversation_AVModality$componentStateChanged anonymous anonymous Lync_Client_Common_EventSource$fireEvent Lync_Client_PluginFramework_PluginComponent$$3_1 Lync_Client_PluginFramework_PluginComponent$$1A_1
anonymous Lync_Client_PluginFramework_PluginObject$$1Q_1 Lync_Client_PluginFramework_PluginObjectManager$handleEvent HandlePluginEvent _AVComponent_8::OnEvent
9:29:9:162, TL_ERROR, , Conversations, Error while getting connection context for audioVideo modality in the conversation 1D82EDC7-0CDB-4E46-B86E-DE1AB164142C. StatusCode = audioDeviceNotConfigured,  Lync_Client_Model_Conversation_ModalityConnectOperation$$EY_1,
STACKTRACE::
Lync_Client_Model_Conversation_ModalityConnectOperation$$EY_1 anonymous Lync_Client_Model_Conversation_AVModality$handleOnPluginLoaded Lync_Client_Model_Conversation_AVModality$componentStateChanged anonymous anonymous Lync_Client_Common_EventSource$fireEvent
Lync_Client_PluginFramework_PluginComponent$$3_1 Lync_Client_PluginFramework_PluginComponent$$1A_1 anonymous Lync_Client_PluginFramework_PluginObject$$1Q_1 Lync_Client_PluginFramework_PluginObjectManager$handleEvent HandlePluginEvent _AVComponent_8::OnEvent
9:29:9:206, TL_ASSERT, , Utils, Exception occured while firing Async Event event id AudioEvent exception Error: Not implemented ,  Lync_Client_Logging_UtilLogger$assert
9:29:9:226, TL_ASSERT, , Utils, Exception occured while firing Async Event event id AudioEvent exception Error: Unexpected call to method or property access.,  Lync_Client_Logging_UtilLogger$assert
9:29:12:681, TL_WARN, , Options, No telephony devices found. Not creating the menu for Options dialog,  Lync_Client_Controls_Options_OptionsDeviceSettingsViewModel$$W_3
9:29:12:681, TL_WARN, , Options, No audio render devices found. Not creating the menu for Options dialog,  Lync_Client_Controls_Options_OptionsDeviceSettingsViewModel$$s_3
9:29:12:681, TL_WARN, , Options, No audio capture devices found. Not creating the menu for Options dialog,  Lync_Client_Controls_Options_OptionsDeviceSettingsViewModel$$r_3
Dumping Logs ENDED
Logger Registered: Wed Jul 24 09:30:08 CDT 2013, Reference Time - Wed Jul 24 09:26:34 CDT 2013
Thank you. Eric.