202310 Cumulative Update For Windows 11 For X64based Systems Kb5031358 Exclusive Jun 2026

: Fixed critical vulnerabilities such as the HTTP/2 Rapid Reset Attack (CVE-2023-44487) and an information disclosure flaw in Microsoft WordPad (CVE-2023-36563).

| Issue | Affects | Workaround | |-------|---------|-------------| | after update on self-encrypting drives | Some NVMe SSDs (e.g., SK Hynix, certain Samsung) | Pause updates if BitLocker is critical. After update, enter recovery key from Azure AD/AD. | | Copilot icon missing even after update | Enterprise with GPO “Turn off Copilot” | Enable via Computer Configuration\Administrative Templates\Windows Components\Windows Copilot | | File Explorer context menu slow (1‑2 sec delay) | Users with many cloud files (OneDrive/Box) | Workaround: reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Blocked" /v "e2bf9676-5f8f-435c-97eb-11607a5bedf7" /t REG_SZ | | Sysprep fails with 0x80073CFA | Custom images with UWP apps | Remove provisioned packages before sysprep, or capture after update without sysprep. | : Fixed critical vulnerabilities such as the HTTP/2

: Patched an information disclosure flaw found inside Microsoft WordPad. | | Copilot icon missing even after update

Manually installing the update from the Microsoft Update Catalog. enter recovery key from Azure AD/AD.