Microsoft Msxml 4.20.9818.0 (FRESH)

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

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

4.20.9818.0 is an older sub-version of SP2. Even the "newer" SP3 (version 4.30.2100.0) is also now unsupported. 🛠️ Why is it on your computer? Microsoft Msxml 4.20.9818.0

This software is considered and a significant security risk. Microsoft Msxml 4.20.9818.0

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

Microsoft officially ended support for MSXML 4.0 in April 2014 .