Re: 'nmap' is not recognized as an internal or external command,

[Rob Nicholls <robert () robnicholls co uk>]

Hi Augustine,

I apologise if this is a silly question, but is the file "nmap.exe" still
present within the Nmap folder when you can't get it to run?

If not, you may have anti-virus or anti-malware software on your system
configured to perform a scheduled scan (at the weekend, for example, as
it's clearly not being picked up in realtime or you'd never be able to run
it during that first week) that's deleting or quarantining Nmap because
it's a "known hacking tool", even though we all know that Nmap is typically
used for good. Alternatively, perhaps you use something else like VPN
software that will perform a check of the host to ensure there aren't any
malicious tools and it's that host checker that's causing the file to be
deleted.

Rob

On Mon, 14 Jun 2010 10:18:58 -0400, "Boyce, Augustine M. <CTR>"
<Augustine.Boyce () associates dhs gov> wrote:
> Hello,
>
> I work in a Windows 2005/2008, and Windows XP environment and I am
having
> problems running Nmap.  It is a weird kind of problem, Nmap will run
fine
> when I install it on my Windows XP machines, but after a week or more
when
> I try to run it I get this error message: 'nmap' is not recognized as an
> internal or external command, operable program or batch file.
> The Environment Variable is set properly.  I try to run it from the Nmap
> folder but the result is the same.  However, when I uninstall and
reinstall
> it Nmap works fine.  I have bought the Nmap book (NMAP Network Scanning)
to
> see if the solution is in there but to no avail.  I have also googled
the
> issue and also checked the Nmap website but have not been able to find a
> solution.  Can you help me please?
>
> Thanks,
> Augustine
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