Huge thanks to our Platinum Members Endace and LiveAction,
and our Silver Member Veeam, for supporting the Wireshark Foundation and project.

Wireshark-dev: Re: [Wireshark-dev] Wireshark fails to start with wpcap.dll built by Visual Stud

From: Yang Luo <hsluoyb@xxxxxxxxx>
Date: Thu, 4 Feb 2016 00:59:38 +0800
Hi Anders,

Building with VS 2013 means the Npcap user has to get a VC 2013 redist installed, which is not always the case (at least fewer installed than VC 2010 redist package). Actually, once a user complains that Npcap fails to run and I found it's because of the unavailability of correct VC redist. And, Npcap is only 600+KB and a VC redist package can be 7+MB. So it's not good for Npcap installer to ship with a VC redist like what Wireshark currently did. Do you have any better solutions?


On Thu, Feb 4, 2016 at 12:46 AM, Anders Broman <anders.broman@xxxxxxxxxxxx> wrote:


Why not build with VS 2013? It seems to be supported in master now. I presume we would like updates pushed there.




From: wireshark-dev-bounces@xxxxxxxxxxxxx [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] On Behalf Of Pascal Quantin
Sent: den 3 februari 2016 17:27
To: Developer support list for Wireshark
Subject: Re: [Wireshark-dev] Wireshark fails to start with wpcap.dll built by Visual Studio 2010




2016-02-03 16:16 GMT+01:00 Yang Luo <hsluoyb@xxxxxxxxx>:

Hi list, 


After several months, I retried updating wpcap project from VS 2005 to VS 2010) and encountered the same issue, under Wireshark 2.0.1 x64, Win10 x64.


The Wireshark UI said "Child dumpcap process died: Access violation". I don't know what this means, because I have used Administrator privilege to launch Wireshark.


I have just attached the x64 version wpcap.dll in this mail, you can just substitute it with the original WinPcap/Npcap version in C:\Windows\System32. Then launch Wireshark and you will see the crash. Hope that any one can see what's wrong with it here.


Hi Yang,

I just gave a test to you dll (have replaced the existing version in C:\windows\System32\ and C:\windows\SysWOW64\ and did not face a crash when running it on Windows 7 x64:

Version 2.0.2 (v2.0.2rc0-71-g1e10145 from master-2.0)


Copyright 1998-2016 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.

License GPLv2+: GNU GPL version 2 or later <>

This is free software; see the source for copying conditions. There is NO



Compiled (64-bit) with Qt 5.5.0, with WinPcap (4_1_3), with libz 1.2.8, with

GLib 2.42.0, with SMI 0.4.8, with c-ares 1.9.1, with Lua 5.2, with GnuTLS

3.2.15, with Gcrypt 1.6.2, with MIT Kerberos, with GeoIP, with QtMultimedia,

with AirPcap.


Running on 64-bit Windows 7 Service Pack 1, build 7601, with locale C, with

Npcap version 0.05, based on WinPcap version 4.1.3 (packet.dll version, based on libpcap version 1.0 branch 1_0_rel0b (20091008), with

GnuTLS 3.2.15, with Gcrypt 1.6.2, with AirPcap 4.1.0 build 1622.

Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz (with SSE4.2), with 7879MB of physical




Built using Microsoft Visual C++ 12.0 build 40629


Wireshark is Open Source Software released under the GNU General Public License.


Check the man page and for more information.


Does it require a reboot of the system?








On Wed, Aug 5, 2015 at 1:27 PM, Yang Luo <hsluoyb@xxxxxxxxx> wrote:

Hi list,


The original WinPcap DLL, wpcap.dll is built by VS 2005, I have updated it to VS 2010 using VS automatic conversion wizard without changing one line of code. But when I launched Wireshark on Win8.1 x64, I encountered an app crash error:



Problem signature:

  Problem Event Name: APPCRASH

  Application Name: dumpcap.exe

  Application Version:

  Application Timestamp: 55be9e4d

  Fault Module Name: wpcap.dll

  Fault Module Version:

  Fault Module Timestamp: 55c19749

  Exception Code: c0000005

  Exception Offset: 000000000001fbca

  OS Version: 6.3.9600.

  Locale ID: 1033

  Additional Information 1: 12c1

  Additional Information 2: 12c1dabe3a9c9d7be788f03210b25196

  Additional Information 3: b207

  Additional Information 4: b207cb8de8ff9d2641379d976acebfca


Read our privacy statement online:


If the online privacy statement is not available, please read our privacy statement offline:




I have updated Packet.dll from VS 2005 to VS 2010 without problem. (If I use VS 2005 version wpcap.dll and VS 2010 version Packet.dll, it works fine) So it can't be lacking C run-time issue. I don't know what's wrong with it?






Sent via:    Wireshark-dev mailing list <wireshark-dev@xxxxxxxxxxxxx>


Sent via:    Wireshark-dev mailing list <wireshark-dev@xxxxxxxxxxxxx>