202310 Cumulative Update For Windows 11 For X64based Systems Kb5031358 Exclusive -

The update addressed over 100 security vulnerabilities, including three high-priority HTTP/2 Rapid Reset (CVE-2023-44487):

Since this was the final update for version 21H2, users are strongly encouraged to upgrade to to continue receiving security protection. administrators using Microsoft Update Catalog

KB5031358 is a update that includes all previous improvements from September 2023 (KB5030319) plus new security and non-security fixes. It is not available for Windows 11 version 21H2 (which reached end of support on October 10, 2023). administrators using Microsoft Update Catalog

While many users received KB5031358 as a standard "Patch Tuesday" update, the "exclusive" label sometimes indicated that it was initially reserved for enterprise users, administrators using Microsoft Update Catalog, or Windows Server Update Services (WSUS). This allowed IT teams to test the update before broad consumer deployment. administrators using Microsoft Update Catalog