Internet downloaded file shows Uknown File format

Hi,

I have downloaded the file through internet which is in the .iso format,download status of this file is Complete but when I try to open that file, it gives me an error message "Unknown file format".

please give some suggestion.
Thanks in Advance.

.iso file format contains exact duplicate of data on a disc; used for making copies of CDs and DVDs,because they copy every bit of data exactly from the disc; this is different than copying all files from a disc because the disc header information is lost in the process; an ISO file can be used to restore a disc exactly to the original version.

please once again try to download the file from the internet.

Try to download the software which will easily execute the ISO file format software because .ISO file cannot run on Internet Explorer.