Microsoft Releases Windows 10 21H1 Build 19043.928 (KB5001330) Apr 13, 2021 13:47 EDT Microsoft has released Windows 10 Build 19043.928 (version 21H1) to Windows Insiders in the Beta and Release Preview Channels. Today's update is also available for commercial devices in the Release Preview Channel, the company said. Windows 10 21H1 Build 19043.928 (KB5001330) brings the following quality improvements and security fixes We fixed an issue in which a principal in a trusted MIT realm fails to obtain a Kerberos service ticket from Active Directory domain controllers (DC). This occurs on devices that installed Windows Updates that contain CVE-2020-17049 protections and configured PerfromTicketSignature to 1 or higher. These updates were released between November 10, 2020 and December 8, 2020. Ticket acquisition also fails with the error, “KRB_GENERIC_ERROR”, if callers submit a PAC-less Ticket Granting Ticket (TGT) as an evidence ticket without providing the USER_NO_AUTH_DATA_REQUIRED flag.