CAP File Extension

CAP file icon
Packet Capture Format
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What is CAP file?

The CAP file is a packet capture file, generated by packet sniffing program. These files are also called a trace file or bone file and are used by numerous packet sniffer programs. These CAP files consist of raw facts and figures that are collected by the sniffing programs so that the data could be evaluated later on or even with a different program. CAP extension files that are Packet Capture files can be accessed using the free Wireshark or Microsoft Network Monitor program. There are some other applications as well that can help with accessing the .CAP packet capture files including NetScout`s Sniffer Analysis and Klos PacketView Pro, and others. 

We hope we helped you solve the problem with the CAP file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the CAP file (apart from the lack of the proper application installed).

First - the CAP file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the CAP file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the CAP file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the CAP file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the CAP file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on CAP file.

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