Security updates to Windows Fundamentals, Windows Shell, Windows UAC, Windows Hybrid Cloud Networking, Windows Graphics, and Windows Media.įor more information about the resolved security vulnerabilities, please refer to the new Security Update Guide website. Ticket acquisition fails with KRB_GENERIC_ERROR if callers submit a PAC-less Ticket Granting Ticket (TGT) as an evidence ticket without the USER_NO_AUTH_DATA_REQUIRED flag being set for the user in User Account Controls. This issue occurs even though Windows Updates are installed that contain CVE-2020-17049 protections released between November 10 and Decemand configured PerfromTicketSignature to 1 or larger.

Manually delete the affected print jobs and resubmit them to the print queue when the print spooler service is online.Īddresses an issue in which a non-native device that is in the same realm does not receive a Kerberos Service ticket from Active Directory DCs.

After installing Windows updates from Maand later, print jobs that are in a pending state before restarting the print spooler service or restarting the OS will remain in an error state. This security update includes improvements and fixes that were a part of update KB4601348 (released previous February 9, 2021) and addresses the following issues:Īddresses an elevation of privilege security vulnerability documented in CVE-2021-1640 related to print jobs submitted to “FILE:” ports.

For more details about Microsoft’s plans, see Update on Adobe Flash Player End of Support. Once installed, you cannot uninstall KB4577586. Installing KB4577586 will remove Adobe Flash Player permanently from your Windows device. As part of the end of support for Adobe Flash, KB4577586 is now available as an optional update from Windows Update (WU) and Windows Server Update Services (WSUS).

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