Update to enable mitigation against Spectre, Variant 2

Applies to: Windows 10, version 1709, all editionsWindows Server 2016 Version 1709Windows 10 Version 1703


Applying this update will enable the Spectre Variant 2 mitigation CVE-2017-5715 - “Branch target injection vulnerability.”
Advanced users can also manually enable mitigation against Spectre, Variant 2 through the registry settings documented in the following articles:

To learn more about Spectre Variant 2, go to the following Security Advisory:

Consult with your device manufacturer’s and Intel’s websites regarding their microcode recommendation for your device before applying this update to your device.

How to get this update

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

More Information

Known issues in this update

Microsoft is not aware of any issues that affect this update currently.


There are no prerequisites to apply this update.

Registry information

To apply this update, you don't have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this update.

Update replacement information

This update does not replace a previously released update.