MSXML 3.0, 4.0, 5.0, and 6.0 can coexist. Version 5.0 is intentionally isolated. If you see assembly binding errors, check the manifest of your calling application. Some .NET wrappers incorrectly map to version 5.0 when they should use 6.0.
regsvr32 "C:\Windows\System32\msxml5.dll" msxml 5.0 for microsoft office applications download
Avoid. Many "MSXML 5.0 download" sites bundle adware, trojans, or outdated unsigned DLLs. Always use original Office media or Microsoft Update Catalog. MSXML 3
Includes support for XML-Data Reduced (XDR) schemas, which was later removed in MSXML 6.0. Microsoft Learn Developer Implementation Always use original Office media or Microsoft Update Catalog
Referencing MSXML 5.0 within VBA Projects - Documentation & Help
While there have been several versions of MSXML (3.0, 4.0, and 6.0), occupies a unique niche. It was specifically designed and optimized for Microsoft Office applications starting with Office 2003. It provided enhanced security features and support for XML standards that were heavily utilized in Word and Excel documents of that era, specifically regarding custom XML schemas and Smart Documents.
Starting with Office 2010 , MSXML 5.0 was removed and replaced by more modern XML standards.