Ethereal-users: Re: [Ethereal-users] Unable to locate wpcap.dll, but it's there!

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

From: Robert Doolittle <robert.doolittle@xxxxxxx>
Date: Tue, 25 Sep 2001 21:43:48 -0700
Hi,

I went to the mirror site, and did as you suggested:
- Removed Windows\packet.dll
- Uninstalled WinPcap from control panel
- rebooted
- Downloaded WinPcap 2.2 from mirror site.
- Installed
- Tried running ethereal

I get the exact same error, unfortunately.  I've double-checked, and there
is no Windows\Packet.dll any more.  I still get "Unable to load WinPcap
(wpcap.dll).  Capturing not enabled."

I checked the Windows/System folder, and I do see Packet.dll and Wpcap.dll,
and their modify dates are current.  What else can I check?  I also downloaded
the latest windump, and when I try to run it from the DOS prompt it dies with an
"Illegal Instruction". All the "detail" screen shows is that it died at 0FE9:0192.

Thanks,
  Bob

Guy Harris wrote:

> > I'm running WIN98, and I installed winpcap v2.1 Beta.
>
> The current non-beta version of WinPcap is 2.2; WinPcap 2.1 beta is out
> of date.
>
> You should uninstall WinPcap 2.1, *and* make sure that there is no
> "Windows\Packet.dll" file, as per an entry in the WinPcap FAQ:
>
>         http://www.wiretapped.net/security/packet-capture/winpcap/misc/faq.htm
>
> (the main site is down, so I'm using the mirror site); that entry says:
>
>         Q-2: How can I see if WinPcap is installed on my system? How can
>         I remove it?
>
>         A: WinPcap 2.1 or newer: go to the control-panel, then open the
>         "add/remove programs" applet.  If WinPcap is present in your
>         system, an entry called "WinPcap" will be present.  Double-click
>         on it to uninstall WinPcap.
>         WinPcap 2.02 or older: go to the control-panel, then open the
>         "Network" applet.  If WinPcap is present in your system, an entry
>         called "Packet Capture Driver" will be listed (in Windows NT you
>         have to choose the "Services" tab).  Select it and press
>         "Remove" to uninstall WinPcap.
>
>         To be absolutely sure that WinPcap has been installed, please
>         look at your system folder: you should find files called
>         packet.* and wpcap.dll.  Please check the file dates: these
>         should be compatible with the WinPcap release dates.
>
>         IMPORTANT NOTE: sometimes, when uninstalling WinPcap version
>         2.02 or older from the control panel's network applet in Windows
>         9x, the file Windows\Packet.dll is not deleted.  You must delete
>         this file manually, otherwise version 2.1 will not work properly
>         and could cause system crashes.
>
> Once you have uninstalled it, *AND* deleted "C:\Windows\Packet.dll" if
> it's present after uninstalling WinPcap, download and install WinPcap
> 2.2:
>
>         http://www.wiretapped.net/security/packet-capture/winpcap/install/default.htm