MSXML, the full name of Microsoft XML Core Services, is mainly used to execute or develop the latest applications designed through XML; it refers to Microsoft's xml language parser, which is software used to interpret xml language.
MSXML contains the SDK Software Development Kit, a language parser from Microsoft that has been used in the latest games.
So, what is MSXML? Its full name is: "Microsoft XML Core Services", which is mainly used to execute or develop the latest applications designed through XML.
msxml refers to Microsoft's xml language parser, which is used to interpret xml language. Just like the html text is downloaded locally, the browser will check the syntax of the html, interpret the html text and then display it. To use xml files, you must use xml parser. But not only Microsoft has it, IBM and Sun have their own xml parser.
Microsoft officially released its XML core service component---MSXML 4.0. Compared with MSXML 3.0, MSXML 4.0 provides a large number of new features and functional improvements. These include: support for XML schema languages, faster parsers and XSLT engines, better handling of XML streams, and better consistency support. MSXML 4.0 is not a replacement for MSXML 3.0, as some obsolete features in 3.0 have been completely removed in 4.0. So 4.0 can be installed at the same time as 3.0 (or even earlier versions).
MSXML 4.0 Service Pack 2 (SP2) is a complete replacement for MSXML 4.0 and MSXML 4.0 Service Pack 1 (SP1). It provides numerous security and bug fixes.
MSXML 4.0 SP2 does not replace MSXML 3.0 because it no longer supports some old and inconsistent features. So users may have to run both MSXML 4.0 and MSXML 3.0 or earlier.
MSXML 6.0 will be installed together with MSXML3.0 and MSXML4.0 and will not affect existing applications using MSXML3.0 and MSXML4.0 (version-independent ProgIDs will not point to MSXML6.0 ).
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