FIX: Msxml2.dll Fails to Register on 32-Processor Computer During MDAC 2.6 Installation

This article was previously published under Q276426
This article has been archived. It is offered "as is" and will no longer be updated.
When installing Microsoft Data Access Components (MDAC) 2.6 RTM (version 2.60.6526.3) on computers that have 32 processors, the following error may occur when Msxml2.dll is registered:
A dynamic link library (DLL) initialization routine failed
This error occurs with Msxml2.dll version 8.0.6518.2. It may be encountered when installing SQL Server 2000, which includes MDAC 2.6.

NOTE: This problem does not occur with the MSXML 3.0 parser (Msxml3.dll version 8.0.7820.0).
Like many of the MDAC components, Msxml2.dll allocates number-of-processors+1 heaps during initialization to avoid heap contention. On a 32-processor computer, this exceeds an internal memory limit of 300K.
To resolve this problem, obtain the latest service pack for Microsoft Data Access Components 2.6. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
300635 INFO: How to Obtain the Latest MDAC 2.6 Service Pack


The English version of this fix should have the following file attributes or later:
   Date          Version      Size             File name      --------------------------------------------------------   28-SEP-2000   8.0.6728.0   687,888 bytes    Msxml2.dll	   28-SEP-2000   8.0.6728.0    21,776 bytes    Msxml2a.dll	   28-SEP-2000   8.0.6728.0    37,648 bytes    Msxml2r.dll	   28-SEP-2000   8.0.6728.0    26,384 bytes    Xmlinst.exe					

You can temporarily modify the computer's Boot.ini file to use the /NUMPROC switch, which will reduce the number of processors used by the operating system.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Data Access Components 2.6 Service Pack 1.
msxml2.dll 2.6 32 processors fail fails register initialization routine failed install

Article ID: 276426 - Last Review: 02/28/2014 04:22:17 - Revision: 4.5

Microsoft Windows 2000 Datacenter Server, Microsoft Data Access Components 2.6, Microsoft XML Parser 2.6, Microsoft SQL Server 2000 Standard Edition

  • kbnosurvey kbarchive kbhotfixserver kbqfe kbbug kbfix kbmdac260sp1fix kbmsxmlnosweep kbqfe KB276426