Wireshark-users: Re: [Wireshark-users] Pcap file isn't a capture file in a format TShark understa
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From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Fri, 22 Jan 2010 09:56:09 -0800
On Jan 21, 2010, at 4:43 PM, kahou lei wrote:

> Looks like I have an invalid file format.

Yes, you have a file that's not a valid pcap file; either it's not a pcap file, or it was a pcap file but got damaged somehow.

How were those files created?

> Can someone please advice what I should do in order to fix this?

What happens if you run the command "file udp.pcap"?