Can't install Comodo Firewall [RESOLVED]


I downloaded Comodo Internet Security the free edition for home users (CIS_Setup_3.5.54375.427_XP_Vista_x64.exe) and when I run it I get the error:

“CIS_Setup_3.5.54375.427_XP_Vista_x64.exe is not a valid Win32 application.”

Of course it isn’t a Win32 application… I downloaded the 64 bit version because I’m running Windows XP Professional 64 SP 2.

The strange thing is I already downloaded and installed it successfully on this PC about half a year ago. I got a new hard-disk so I had to install everything all over.

I don’t understand why I’m getting this error. I’m not trying to install it in any compatibility mode either.

Hi tdi, welcome to the forums.

There are only 2 reasons that I can think of, at the moment, that would result in an invalid Win32 application message when trying to execute CIS’ installer… the download is corrupt (or incomplete) or that another security application blocked its execution.

Another security application is something that only you can check, but the actual download EXE is easy enough to check. According to CIS’ download page, the 64bit installer should be 39.9 MB or 41,904,392 bytes.

Try downloading from this mirror:
If the file you downloaded was corrupt, this should resolve the issue.

That was it… my download only had about 9mb. Now it’s 40mb and the install works correctly. Strange thing to happen though… I can’t remember having ever had a corrupt download.

Thanks for your help, guys!

Will close this one.