The gory details of what led me to that answer: The current version of Wireshark, however, does support pcap-ng capture files. The short answer is that the originating server is generating pcap-ng capture files, and that format is not currently supported by WinPcap, therefore SharpPcap cannot open those files.
Capture application: Dumpcap 1.10.6 (Git Rev Unknown from unknown)Ģ,812 3 3 gold badges 29 29 silver badges 52 52 bronze badges 3 Answers. Using WireShark's Statistics / Summary for the pcap, it displays the following about the capture: Running on 64-bit Windows 7 Service Pack 1, build 7601, with WinPcap version 4.1.3 (packet.dll version 4.), based on libpcap version 1.0 branch 1_0_rel0b (20091008), GnuTLS 2.12.18, Gcrypt 1.4.6, without AirPcap. I believe SharpPcap includes AirPcap, so I wonder if that somehow makes a difference. I looked more closely at WireShark's version information, and apparently it's using a version of WinPcap without AirPcap support. What would cause SharpPcap to be unable to open this file? What's interesting, is that Wireshark Version 1.10.3 on the same system - and is also using the same version of WinPcap, is able to open the file! The exception being raised is Unable to open offline adapter: bad dump file format, and it occurs in the routine CaptureFileReaderDevice at line: 
I'm trying to read a pcap file that was created with TShark 1.10.6 with libpcap version 1.4.0 on FreeBSD 9.2, and am doing this on Windows 7 with c# in Visual Studio, SharpPcap 4.2, PacketDotNet 0.13 and WinPcap 4.1.3.
I downloaded/installed Cain + the WinPcap driver, but when I go to open up Cain, I get the following message: 'Unable to open Winpcap driver: The system cannot find the device specified.' Any help here would be appreciated. Snaplen specifies the portion of the packet to capture. The parameters, snaplen, flags and to_ms deserve some explanation. The function that opens a capture device is pcap_open(). 
Among the applications that use libpcap/WinPcap as its packet capture subsystem are the famous tcpdump and Wireshark. The libpcap library for UNIX based systems and WinPcap for Windows are the most widely used packet capture drivers that provide API for low-level network monitoring.The installation applet will automatically detect the operating system and install the correct drivers The WinPcap-based applications are now ready to work To remove WinPcap from the system, go to the Control Panel, click on 'Add/Remove programs' and then select 'WinPcap'.It is essential for capturing the packets passing through the network. If you see a message when you run the program such a 'problem registering the driver' or 'problem installing the drivers', install WinPcap program. Cain And Abel Unable To Open Winpcap Driver.
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