The "msxml.dll" file, provided by Microsoft Corporation, is a critical component of Microsoft XML Core Services, often referred to as MSXML. MSXML offers a set of services allowing applications to use Windows-native XML-based capabilities. This specific DLL, "msxml.dll", facilitates the XML Object Model for the Win32 platform, providing tools and utilities for reading, writing, and manipulating XML data. XML (Extensible Markup Language) is widely employed in various applications for data representation and communication. Microsoft's XML Core Services are a series of tools and libraries designed to provide native XML support for Windows applications, making it easier for developers to incorporate XML functionalities in their projects.

As with many DLL files, if "msxml.dll" becomes missing, corrupted, or is incorrectly installed, certain applications that rely on it may fail to function properly. Users might encounter messages like "msxml.dll not found" or "msxml.dll is missing" when trying to run software that depends on it. For those facing issues with this DLL, one remedial approach would be to reinstall the software presenting the error or to ensure the correct version of MSXML is installed.