January 3, 2018—KB4056898 (Security-only update)
Applies to: Windows 8.1, Windows Server 2012 R2 Standard
Improvements and fixes
This security update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:
For more information about the resolved security vulnerabilities, see the Security Update Guide.
- Security updates to Windows SMB Server, Windows Kernel, Windows Datacenter Networking, and Windows Graphics.
Known issues in this update
Symptom Workaround When calling CoInitializeSecurity, the call will fail if passing RPC_C_IMP_LEVEL_NONE under certain conditions. Microsoft is working on a resolution and will provide an update in an upcoming release. Due to an issue with some versions of Anti-Virus software, this fix is only being made applicable to the machines where the Anti virus ISV have updated the ALLOW REGKEY. Contact your Anti-Virus AV to confirm that their software is compatible and have set the following REGKEY on the machine
How to get this update
This update will be downloaded and installed automatically from Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog website.
Source: January 3, 2018 KB4056898 (Security-only update) Windows 8
See also: Important: Windows security updates released January 3, 2018, and antivirus software
Direct download links for KB4056898 MSU file from Microsoft Update Catalog:
:ar: Download KB4056898 MSU for Windows 8.1 32-bit (x86) - 59.1 MB
:ar: Download KB4056898 MSU for Windows 8.1 64-bit (x64) - 111.0 MB