May 9, 2017—KB4019215 (Monthly Rollup)

Applies to: Windows 8.1Windows Server 2012 R2

Improvements and fixes


This security update includes improvements and fixes that were a part of update KB4015553 (released April 18, 2017) and also resolves the following:

  • Addressed issue where applications that use msado15.dll stop working after installing after installing security update 4015550
  • Deprecated SHA-1 Microsoft Edge and Internet Explorer 11 for SSL/TLS Server Authentication. See Advisory 4010323 for more information.

  • Updated Internet Explorer 11’s New Tab Page with an integrated newsfeed.
  • Security updates to Microsoft Graphics Component, Microsoft Windows DNS, Windows COM, Windows Server, Windows kernel, and Internet Explorer.

For more information about the security vulnerabilities resolved, please refer to the Security Update Guide.

Known issues in this update


Symptom  Workaround
If the PC uses an AMD Carrizo DDR4 processor, installing this update will block downloading and installing future Windows updates. This issue is resolved by KB4022726.
If a Server 2012 R2 system uses an Intel Xeon (E3 v6) family of processors, installing this update will block downloading and installing future Windows updates. This issue is resolved by KB4022726.
This security update introduced an issue in which, if an iSCSI target becomes unavailable, attempts to reconnect will cause a leak. Initiating a new connection to an available target will work as expected. Microsoft is working on a resolution and will provide an update in an upcoming release. For more information about this issue, see the following section.

How to get this update


This update will be downloaded and installed automatically from Windows Update. To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

More Information


  • The security fixes that are listed in this Security Monthly Quality Rollup KB4019215 are also included in the May 2017 Security-Only Quality Update, KB4019213, except for the security fixes for Internet Explorer. Those are instead included in the Cumulative Security Update for Internet Explorer KB4018271. Installing either this May 2017 Security Monthly Quality Rollup or both the May 2017 Security-Only Quality Update and the Cumulative Security Update for Internet Explorer will install the security fixes that are listed here. This Security Monthly Quality Rollup also includes improvements and fixes from previous monthly rollups.
  • If you use update management processes other than Windows Update, and you automatically approve all security update classifications for deployment, May 2017 Security Monthly Quality Rollup KB4019215, May 2017 Security-Only Quality Update KB4019213, and the Cumulative Security Update for Internet Explorer KB4018271 are deployed. We recommend that you review your update deployment rules to make sure that the desired updates are deployed.