March 13, 2018—KB4088877 (Monthly Rollup)

2018-04-0607:00:00

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March 13, 2018—KB4088877 (Monthly Rollup)

Improvements and fixes

This security update includes improvements and fixes that were a part of update KB4075213 (released February 21, 2018) and addresses the following issues:

Provides Spectre and Meltdown protection for 32-Bit (x86) and 64-Bit (x64) versions of Windows.
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

Symptom	Workaround
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 KB4093123. You no longer need the following ALLOW REGKEY to detect and be offered this update: HKEY_LOCAL_MACHINE"Subkey="SOFTWARE\Microsoft\Windows\CurrentVersion\QualityCompat\cadca5fe-87d3-4b96-b7fb-a231484277cc
After you install this update, you may receive a Stop error message that resembles the following when you log off the computer:

SESSION_HAS_VALID_POOL_ON_EXIT (ab)

| To resolve this issue, apply update KB 4099468.

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 informationFor a list of the files that are provided in this update, download the file information for update 4088877.