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how to decide if TCP/IP is installed

how to decide if TCP/IP is installed

how to decide if TCP/IP is installed

(OP)
I have several PCs on a test LAN where a product under test fails to instal.  The error given is that TCP/IP is not installed - it is, and network operations etc. work fine.

The PCs in question run XP with SP2. The firewall is off and some with XP SP2 work fine - I can't see what is different.

Is there a standard method to test if TCP/IP is installed and if so, what is being checked?  I'm sure it is trivial ( file version, registry entry or whatever) but it is really frustrating !  Please note this application/installer was compiled around 1999 so it will be using an old verion of the Wise installer.

Any pointers gratefully accepted.

RE: how to decide if TCP/IP is installed

I'm thinking that using the information found on these two pages, you could perform a registry search in your setup package to look for one or more of the registry keys mentioned.  

http://support.microsoft.com/kb/299451/?sd=RMVP&fr=1

http://www.windowsitpro.com/windowsnt20002003faq/Article/ArticleID/15002/windowsnt20002003faq_15002.html

It looks like the two primary keys involved are:
HKEY_LOCAL_MACHINE\Software\Microsoft\Tcpip
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip and possibly also:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\Root\Legacy_TCPIP


Hope this helps.

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