Table of contents

Release Date:



Monthly Rollup

Improvements and fixes

This security update includes improvements and fixes that were a part of update KB4075212 (released February 21, 2018) and addresses the following issues:

  • Addresses an issue in  which Internet Explorer is unresponsive in certain scenarios when a Browser Helper Object is installed.

  • Updates legacy Document Mode cell visibility in Internet Explorer.

  • Addresses an issue in which Internet Explorer stops working in certain printing scenarios.

  • Addresses an issue in which Internet Explorer stops working when you use F12-based developer tools.

  • Addresses an issue in Internet Explorer that causes the Outlook Web App to slow down under certain circumstances.

  • Addresses an issue in which customers sometimes can't sign in to Windows 2012 R2 servers when they use a custom credential provider on a console or RDP.

  • Provides cumulative Spectre and Meltdown protection 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.

  • Provides security updates to Internet Explorer, the Microsoft Graphics component, Windows Kernel, Windows Shell, Windows MSXML, Windows Installer, and Windows Hyper-V.

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 applies only to computers on which the antivirus ISV updated the ALLOW REGKEY.

This issue is resolved in KB4093114. You no longer need the following ALLOW REGKEY to detect and be offered 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 update 4088876

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