Microsoft security advisory: Update to Hyper-V to address CPU weakness: November 10, 2015


Microsoft has released a security advisory about this issue for IT professionals. The security advisory contains additional security-related information. To learn more about the vulnerability, see

More Information

  • If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

More information about this security update

The following article contains more information about this security update as it relates to individual product versions. The article may contain known issue information.
  • 3108604 Microsoft Security Advisory: Description of the security update for Windows Hyper-V: November 10, 2015

How to get and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see
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