Improvements and fixes
This non-security update includes improvements and fixes that were a part of KB4074598 (released February 13, 2018) and also includes these new quality improvements as a preview of the next Monthly Rollup update:
Updates time zone information.
- Addresses issue that causes services.exe to stop working after applying the "Obtain an impersonation token for another user in the same session” privilege to Windows Server 2012 R2 computers. These computers then enter a restart loop. The system may report the SceCli event ID 1202 with error 0x4b8. It may also report the Application Error event ID 1000 with the faulting module name scesrv.dll and the exception code 0xc0000409. This privilege was first introduced in Windows Server 2016.
- Addresses issue where the Microsoft Outlook Web App slows down when running in Internet Explorer 11 in certain situations.
For more information about the resolved security vulnerabilities, see the Security Update Guide.
Known issues in this update
|Because of an issue that affects some versions of antivirus software, this fix is being applied only to the computers on which the antivirus ISV have updated the ALLOW REGKEY.|| |
The issue is resolved in KB4093113. You no longer need the following ALLOW REGKEY to detect and be offered this update:
|The LSM.EXE process and applications that call SCardEstablishContext or SCardReleaseContext may experience a handle leak. Once the leaked handle count reaches a certain threshold, smart card-based operations fail with error "SCARD_E_NO_SERVICE". Confirm the scenario match by reviewing the handle counts for LSM.EXE and the calling processes in the process tab of Task Manager or an equivalent application.|| |
This issue is resolved in KB4091290.
After installing KB4056897 or any other recent monthly updates, SMB servers may experience a memory leak for some scenarios. This occurs when the requested path traverses a symbolic link, mount point, or directory junction and the registry key is set to 1:
Microsoft is working on a resolution and will provide an update in an upcoming release.
How to get this update
This is provided as an optional update on Windows Update. For more information about how to run Windows Update, see How to get an update through Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog website.
For a list of the files that are provided in this update, download the file information for update 4075211.