DOCUMENT:Q235638  12-JUL-2001  [utilities]
TITLE   :INFO: DCOM95 and DCOM98 Version Information
PRODUCT :Microsoft Programming Utilities
PROD/VER::
OPER/SYS:
KEYWORDS:kbCOMt kbDCOM kbGrpDSCom kbDSupport

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft COM, used with:
    - the operating system: Microsoft Windows 98 
    - the operating system: Microsoft Windows 95 
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SUMMARY
=======

This article describes how to determine which version of DCOM95 or DCOM98 you
are running and includes a table with DCOM95 and DCOM98 version information.

MORE INFORMATION
================

How to Use the Registry to Determine Version
--------------------------------------------

You can check the registry to determine which version of DCOM95 or DCOM98 is
installed on a Windows 95-based or Windows 98-based system. If Distributed
Component Object Model (DCOM) is installed on the system, the default value of
the following registry key:

   HKCR\CLSID\{bdc67890-4fc0-11d0-a805-00aa006d2ea4}\InstalledVersion

contains the DCOM version that is installed on the system. In the registry, the
version number is stored in the format "a,b,c,d", where a, b, c, and d are
numeric values that represent the following attributes:

   a - major operating system version
   b - minor operating system version
   c - minor file version
   d - major file version

Version Information Table
-------------------------

The following table lists the version information for DCOM95 and DCOM98:

+------------------------------------------------------------------------------------------------------------------------------------------------------------+
| InstalledVersion | DCOM Version or Build Number            | Release Type                                                                                  | 
+------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 4,71,0,3328      | DCOM95 1.3 and DCOM98 1.3, build 3328.1 | Released to the Web                                                                           | 
+------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 4,71,0,2900      | Build 2900.7                            | Released to Windows 98 Second Edition, Microsoft Internet Explorer 5.0, Microsoft Office 2000 | 
+------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 4,71,0,2618      | DCOM95 1.2                              | Released to the Web                                                                           | 
+------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 4,71,0,2612      | DCOM98                                  | Shipped with Microsoft Visual Studio 6.0                                                      | 
+------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 4,71,0,1719      | Build 1719                              | Released to Windows 98 Gold, fix for build 1718.                                              | 
+------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 4,71,0,1718      | DCOM95 1.1                              | Released to the Web in October, 1997; released to Internet Explorer 4.01.                     | 
+------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 4,71,0,1120      | Build 1120                              |                                                                                               | 
+------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 4,71,0,426       | DCOM95 1.0                              | Released to the Web in January 1997                                                           | 
+------------------------------------------------------------------------------------------------------------------------------------------------------------+

How to Programmatically Determine the Version
---------------------------------------------

To programmatically determine if DCOM is installed, use the following code:

       HINSTANCE hDLL = LoadLibrary("OLE32.DLL")
       if(NULL == hDLL)
       {
           // See Winerror.h for explanation of error code.
           DWORD error = GetLastError();
           TRACE1("LoadLibrary() Failed with: %i\n", error);
           return FALSE;
       }
       if (!GetProcAddress(hDLL,"CoCreateInstanceEx"))
       {
           //DCOM is not loaded
       }
       else
       {
           //DCOM is loaded
       }

REFERENCES
==========

You can download DCOM98 for Windows 98 version 1.3 from the following Microsoft
Web site:

   http://www.microsoft.com/com/dcom/dcom98/dcom1_3.asp

You can download DCOM95 for Windows 95 version 1.3 from the following Microsoft
Web site:

   http://www.microsoft.com/com/dcom/dcom95/dcom1_3.asp

The following file is available for download from the Microsoft Download Center:

   DCOM9x configuration utility

Additional query words: DCOM win95 win98 windows DCOM98 DCOM95

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Keywords          : kbCOMt kbDCOM kbGrpDSCom kbDSupport 
Component         : kbole
Technology        : kbAudDeveloper kbCOM kbCOMPlusSearch
Version           : :
Issue type        : kbinfo

=============================================================================

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