March 13, 2018 - KB4088786 (OS Build 10240.17797)

Applies to: Windows 10 Enterprise released in July 2015

Improvements and fixes

This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

  • Addresses issue with printing XML documents with Internet Explorer and Microsoft Edge.
  • Addresses issue with Internet Explorer and Microsoft Outlook integration.
  • Addresses issue where Internet Explorer stops working when using F12-based developer tools.
  • Updates legacy Document Mode cell visibility in Internet Explorer.
  • Addresses issue where Internet Explorer is unresponsive in certain scenarios when a Browser Helper Object is installed.
  • Addresses issue where files protected with the Encrypting File System (EFS) may become corrupted during BitLocker decryption or drive encryption.
  • Addresses issue where booting with Unified Write Filter (UWF) enabled may lead to stop error 0xE1 on embedded devices, particularly when using a USB hub.
  • Addresses issue where IoT devices may stop working because of an “unmountable_boot_volume” error when UWF is enabled.
  • Lifts the Anti-Virus (AV) compatibility check to expand the number of Windows 10 devices that are offered cumulative Windows security updates. This includes cumulative Spectre and Meltdown protections for 32-Bit (x86) and 64-Bit (x64) versions of Windows, except the KB4078130 update that was offered to disable mitigation against Spectre Variant 2.
  • Addresses issue that only affects some versions of antivirus software and only applies to computers on which the antivirus ISV updated the ALLOW REGKEY.
  • Security updates to Internet Explorer, Microsoft Edge, Microsoft Scripting Engine, Microsoft Graphics component, Windows Kernel, Windows Shell, Windows MSXML, Windows Installer, Device Guard, and Windows Hyper-V.

If you installed earlier updates, only the new fixes in this package will be downloaded and installed on your device.

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

Windows Update Improvements
Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 Feature Update based on device compatibility and Windows Update for Business deferral policy. This does not apply to long-term servicing editions.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

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 cumulative update 4088786.


PC Direct download links for KB4088786 from Microsoft Update Catalog:

Download KB4088786 MSU for Windows 10 Version 1507 32-bit (x86) - 483.7 MB

Download KB4088786 MSU for Windows 10 Version 1507 64-bit (x64) - 899.8 MB