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 Critical Status: Obsolete and Insecure
Because it no longer receives updates, it is frequently flagged by security scanners (like Nessus or Qualys) as a vulnerability. 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
This software is considered and a significant security risk. This software is considered and a significant security risk
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
Older applications (like Toad for Oracle, SQL Server tools, or older games) install it as a necessary dependency.
Note. Support for XML Core Services 4.0 has ended. Support was only available for Service Pack 3. Microsoft Learn