Microsoft - Msxml 4.20.9818.0

Because it no longer receives updates, it is frequently flagged by security scanners (like Nessus or Qualys) as a vulnerability.

You likely didn't install this manually. It usually arrives in one of two ways: Microsoft Msxml 4.20.9818.0

Older applications (like Toad for Oracle, SQL Server tools, or older games) install it as a necessary dependency. Because it no longer receives updates, it is

It was commonly included in or updated via Windows XP, Vista, and Windows 7. ✅ Should you keep or remove it? Microsoft XML Core Services 4.0 - Microsoft Lifecycle Because it no longer receives updates

Note. Support for XML Core Services 4.0 has ended. Support was only available for Service Pack 3. Microsoft Learn

This software is considered and a significant security risk.