Some cumulative updates are marked "exclusive" because they are pre-requisites for the next month’s security update. Installing KB5031358 was mandatory before later updates (like November 2023’s KB5032190) could be applied, making it an exclusive stepping stone.
Because this update has been superseded, Windows Update may no longer offer it by default. However, for legacy validation or offline systems, you can still obtain it. Some cumulative updates are marked "exclusive" because they
KB5031358 was the main security update for Windows 11 in October 2023. It was significant because it was the update that "turned on" the Moment 4 feature update features by default, such as the updated Windows Backup app, tweaks to the Start Menu, and changes to the taskbar. However, for legacy validation or offline systems, you
| Feature | KB5030219 (Sept 2023) | KB5031358 (Oct 2023) | | --- | --- | --- | | Build Number | 22621.2283 | 22621.2428 | | Zero-day fixes | CVE-2023-36761 | CVE-2023-44487, CVE-2023-36563 | | HTTP/2 protection | No | Yes (Rapid Reset patch) | | Multi-monitor DWM issue | No | Yes (new bug introduced) | | Xbox performance | No change | Improved USB polling rate | | LAPS policies | Partial | Full support (x64 exclusive) | | Feature | KB5030219 (Sept 2023) | KB5031358