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.

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 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 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 Critical Status: Obsolete and Insecure Because it no longer receives updates, it is

Microsoft officially ended support for MSXML 4.0 in April 2014 .

You likely didn't install this manually. It usually arrives in one of two ways: Support for XML Core Services 4

This software is considered and a significant security risk.