KB4556812

• Updates to improve security when using Internet Explorer and Microsoft Edge.

• Updates to improve security when using input devices such as a mouse, keyboard, or stylus.

• Updates to improve security when using Microsoft Xbox.

• Updates to improve security when Windows performs basic operations.

• Updates for storing and managing files.

• Updates to improve security when using external devices (such as game controllers, printers, and web cameras).

• Addresses an issue that prevents certain apps from installing if they are published using a Group Policy Object.

• Updates the 2020 start date for daylight saving time (DST) in the Kingdom of Morocco.

• Addresses an issue that causes a memory leak in the LsaIso.exe process when the server is under a heavy authentication load and Credential Guard is enabled.

• Addresses an issue with running klist.exe that causes lsass.exe to stop working and generates an access violation error (0xC0000005).

• Addresses an issue that prevents Microsoft Internet Information Services (IIS) management tools, such as IIS Manager, from managing an ASP.NET application that has configured SameSite cookie settings in web.config.

• Addresses an issue that prevents a call to NCryptGetProperty() from returning the correct pbOutput value when pszProperty is set to "Algorithm Group" and you are using a Trusted Platform Module (TPM) 1.2 device.

• Security updates to Internet Explorer, the Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Input and Composition, Windows Media, Windows Shell, Microsoft Xbox, Microsoft Edge, Windows Fundamentals, Windows Cryptography, Windows Kernel, Windows Update Stack, Windows Core Networking, Windows Peripherals, Internet Information Services, Windows Network Security and Containers, Windows Active Directory, Windows Storage and Filesystems, and the Microsoft JET Database Engine.

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