Article ID: 321924 - View products that this article applies to.
This article was previously published under Q321924
Microsoft XML (MSXML) 3.0 Service Pack 2 (SP2), or later service pack, installs only in replace mode. This release is also included with Microsoft Windows XP, Microsoft Internet Explorer 6.0, and Microsoft Data Access Components (MDAC) 2.7. Replace mode indicates that the newly installed version of MSXML replaces an older version and becomes the default XML parser.
If you install MSXML 3.0 SP2 or any of the programs listed at the beginning of this article, the registry setting of InprocServer32 for CLSIDs registered by the Microsoft XML 2.0 and Microsoft XML 2.5 parsers (Msxml.dll) is reset to use the Msxml3.dll file. The MSXML object creation process with corresponding ProgIDs will use MSXML 3.0 SP2. The InprocServer32(Default) registry keys for the following classes are changed with this new install, which previously had the default value of Msxml.dll.
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Programs that use MSXML 2.5 (Msxml.dll) or earlier may require additional compatibility testing with this upgrade. MSXML 3.0 is more compliant with W3C standards and stricter in enforcing the W3C specifications -- for example, in checking the valid character range.
For additional information about how to check the valid character range, click the article number below to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/315580/EN-US/ )PRB: Error Message When an XML Document Contains Low-Order ASCII Characters
In versions of MSXML earlier than MSXML 3.0 SP2, you must run the Xmlinst.exe utility for the replace-mode change. If you run this utility under some scenarios, this may cause instability in the system and result in an unsupported configuration.
To meet the increasing demands from customers and XML developers, MSXML 3.0 SP2 was fully tested in replace mode with Window XP, MDAC 2.7, and Internet Explorer 6.0. This version installs and runs only in replace mode and is fully supported by Microsoft.
Additionally, there are added benefits to installing MSXML 3.0 SP2 in replace mode. For example:
For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/278636/EN-US/ )PRB: Application Errors Occur After You Run Xmlinst.exe on Production Servers
(http://support.microsoft.com/kb/308480/EN-US/ )INFO: How to Obtain the Latest Microsoft XML 3.0 Service Pack
(http://support.microsoft.com/kb/308563/EN-US/ )INFO: List of Issues Fixed in Microsoft XML 3.0 Service Pack 2 (Part 1 of 4)
(http://support.microsoft.com/kb/308564/EN-US/ )INFO: List of Issues Fixed in Microsoft XML 3.0 Service Pack 2 (Part 2 of 4)
(http://support.microsoft.com/kb/308565/EN-US/ )INFO: List of Issues Fixed in Microsoft XML 3.0 Service Pack 2 (Part 3 of 4)
(http://support.microsoft.com/kb/308566/EN-US/ )INFO: List of Issues Fixed in Microsoft XML 3.0 Service Pack 2 (Part 4 of 4)
Article ID: 321924 - Last Review: November 6, 2003 - Revision: 1.5
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