May 8, 2018—KB4103718 (Monthly Rollup)

Applies to: Windows 7 Service Pack 1Windows Server 2008 R2 Service Pack 1

Improvements and fixes


This security update includes improvements and fixes that were part of update KB4093113 (released April 17, 2018) and addresses the following issues:

  • Addresses an issue that may cause a memory leak on SMB servers after installing KB4056897 or any other recent monthly update. This leak may occur when the requested path traverses a symbolic link, a mount point, or a directory junction and the registry key is set to 1: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\LanManServer\Parameters\EnableEcp  
  • Addresses an issue that may cause an error when connecting to a Remote Desktop server. For more information, see CredSSP updates for CVE-2018-0886.
  • Security updates to Internet Explorer, Windows apps, Windows kernel, Microsoft Graphics Component, Windows storage and filesystems, HTML help, and Windows Hyper-V. 

For more information about the resolved security vulnerabilities, see the Security Update Guide.

Known issues in this update


Symptom Workaround
A stop error occurs on computers that don't support Streaming Single Instructions Multiple Data (SIMD) Extensions 2 (SSE2). Upgrade your machines with a processor that supports SSE2 or virtualize those machines.

After you apply this update, the network interface controller may stop working on some client software configurations. This occurs because of an issue related to a missing file, oem<number>.inf. The exact problematic configurations are currently unknown.

  1. To locate the network device, launch devmgmt.msc; it may appear under Other Devices.
  2. To automatically rediscover the NIC and install drivers, select Scan for Hardware Changes from the Action menu.

a. Alternatively, install the drivers for the network device by right-clicking the device and choosing Update. Then choose Search automatically for updated driver software or Browse my computer for driver software.

After installing this update, some Windows 7.0 SP1 files reverted to older versions. This issue is resolved in KB4103713.

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.

File information

For a list of the files that are provided in this update, download the file information for update 4103718