On Windows 2000 server:

Any attempt to use com_invoke() returns this error message:

Fatal error: Call to undefined function: com_invoke() in ...

The COM was tested, it works with VBScript from a Microsoft ASP with the same
conditions.

I had exactly the same problem, but I got the com objects to work with
this kind of syntax:

$obj = new COM ("name");

and call a method with:
$obj->method ($param1);

properties:
$obj->prop1 = "blagh";

Duplicate of #8121

--Jani