Known issues in this updateĬertain operations, such as rename, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. For more information, see CVE-2020-26784.Īddresses an issue that prevents you from changing a password that has expired when you sign in to a Windows device.įor more information about the resolved security vulnerabilities, please refer to the Security Update Guide website and the April 2022 Security Updates.

This security update includes improvements and fixes that were a part of update KB5011564 (released March 8, 2022) and addresses the following issues:Īddresses an issue in Windows Media Center where some users might have to reconfigure the application on each start.Īddresses a memory leak that was introduced by the PacRequestorEnforcement registry key in the November 2021 Cumulative Update that causes a decrease in performance on domain controllers.Īddresses an issue in which Event ID 37 might be logged during certain password change scenarios.Īddresses an issue in which Windows might go into BitLocker recovery after a servicing update.Īddresses an issue in which domain joins may fail in environments that use disjoint DNS hostnames.Īddresses an issue that causes a Denial of Service vulnerability on Cluster Shared Volumes (CSV). Operating systems in extended support have only cumulative monthly security updates (known as the 'B' or Update Tuesday release).įor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article. To view other notes and messages, see the Windows 8.1 and Windows Server 2012 R2 update history home page. IMPORTANT Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as 'C' releases) for this operating system.

Windows server 12 r2