Microsoft Msxml 4.20.9818.0 May 2026

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, it is frequently flagged by security scanners (like Nessus or Qualys) as a vulnerability.

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

Older applications (like Toad for Oracle, SQL Server tools, or older games) install it as a necessary dependency.

This software is considered and a significant security risk. It was commonly included in or updated via

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

Microsoft officially ended support for MSXML 4.0 in April 2014 . Older applications (like Toad for Oracle, SQL Server

Microsoft MSXML 4.20.9818.0 is a specific version of . It is an older system component used by legacy Windows applications to parse and process XML data. Critical Status: Obsolete and Insecure