First check if you have MS I Explorer 5.0 and above with virtual machine installed. This can cause this error.
Second, it can be a conflict with the UDP port in use by both the REMOTE agent and DSPro agent software.
The fix for this is:
1. Open regedt32.exe
2. HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc ---> move "NCACN_IP_TCP" to the top of the list
3. Add three values under this key:
Name Type Value
Ports REG_MULTI_SZ 2002-2010
PortsInternetAvailable REG_SZ Y
UseInternetPorts REG_SZ Y
4. Using dcomcnfg.exe, modify the default authentication level to "none" found under the default properties tab.
5. Reboot your system.
Another fix could be:
On the startmenu of the DSpro server Go to Run. Open dcomcnfg. Under the "Default Authentication Level" and Select none.
And last but not least verify the following
1. The monitor card should not have TCP/IP bindings EXCEPT if using the Full Duplex Pod (see 3 below). Only the transport card should have TCP/IP bound to it. Disable the monitor card's TCP/IP binding using the Network utility in NT's Control Panel. Click on Bindings. Select to show bindings for all adapters. Expand the monitor adapter list. Disable TCP/IP and WINS (if listed) for the monitor adapter. Only Sniffer Driver should be bound. Click OK and reboot NT.
2. If NetBEUI was added as a protocol to the Agent make sure that it is not bound to both the transport and monitor cards. Unbind it from the monitor card. If NetBEUI is a protocol configured for the console which has multiple network interface cards, make sure it is only bound to one card.
3. When using a Full Duplex Pod: You will need to keep TCP/IP and the Sniffer Driver bound to the monitor card. In this case, make sure that IP forwarding is turned off, and that no other protocols are bound to the monitor card such as NetBEUI and WINS. Ensure that an ip gateway is not specified on the monitor card.
4. Do not run DSPro Console on the same machine as Sniffer Pro. If you are, uninstall both, then reinstall the DSPro Console.
5. Launching multiple Consoles and running capture on each instantaneously may cause the capture session to fail. "Failed to create empty document" will appear on the screen. Allow the first capture session to start completely before starting the second.
6. Ensure that DSPro versions are the same on BOTH the Console and Agent.
7. On Win 95 or Win 98 DSPro Consoles, make sure it is set to a Domain, and not a Workgroup. This setting is under Control Panel/Networks.
8. Conflict with DataComm ConnectIT software on the agent. REMOTEagent.exe is running as a service process on the DSPro agent. Interoperability with ConnectIT software has not been fully tested or supported. Please check back here periodically for an update to this issue.