Thanks Jonathan,

Your idea is good.
I prefered changing CLSID_DOMDocument40 with CLSID_DOMDocument30, but it 
doesn't work anymore.

Forest

"Jonathan Chong" wrote:

> You are using msxml3.dll but your code are referring to class identifier
> CLSID_DOMDocument40 (which is found in msxml4.dll). To solve the problem,
> download MSXML 4.0 and change to use msxml4.dll instead.
> 
> "Forest" <Forest@d...> wrote in message
> news:134FA515-2603-4915-A652-612F5FC32CAF@m......
> > Hello,
> >
> > I want to verify my XML document with a XSD schema. To do this, I use the
> > msxml3 dll as following :
> >
> > CoInitialize(NULL);
> > IXMLDOMDocument2* pXMLDocument = NULL;
> > HRESULT hr = ::CoCreateInstance(CLSID_DOMDocument40, NULL, CLSCTX_SERVER,
> > IID_IXMLDOMDocument2, (LPVOID*) (&*pXMLDocument));
> >
> > On some machines, thats works perfectly. But, on others machines, I have
> the
> > REGDB_E_CLASSNOTREG error whereas the msxml3 dll seems to be registered
> > correctly.
> >
> > Does anybody have an idea ?
> > I tried msxml3usa.msi found on the microsoft site. It doesn't better.
> > How can I verify the DLL is really registered ?
> >
> > Thanks for your help
> 
> 
>