Microsoft KB Archive/247553

From BetaArchive Wiki
Knowledge Base

Windows NT Option Pack (NTOP) Downgrades MDAC Components

Article ID: 247553

Article Last Modified on 6/23/2005


  • Microsoft Internet Information Server 4.0

This article was previously published under Q247553

We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:


When you install the Windows NT Option Pack (NTOP), some MDAC components may be downgraded to the version that is included with the NTOP regardless of the version of MDAC that is already installed on the computer.


IIS 4.0 ignores the MDAC file and registry version information and installs the version of MDAC included in the IIS 4.0 Setup program.


To work around this problem, you can manually suppress the entire MDAC portion of the IIS 4.0 (Option Pack) Setup program.

NOTE: If you do not have a version of MDAC installed before you attempt this workaround, your IIS installation may fail to function properly. MDAC is required by IIS for some of its basic functionality. Use this workaround at your own risk.

To suppress the MDAC installation during IIS 4.0 setup, do the following:

  1. Copy the Windows NT Option Pack files to a temporary directory on your hard drive.
  2. Edit the Iisv4.inf file in the temporary directory where you copied the IIS 4.0 Setup files.
  3. Locate the section [Components.x86], and use a semicolon (;) to comment out the following line:

  4. Repeat step 3 for the section [Components.alpha].

Keywords: kbprb kbpending KB247553