MS16-035: Description of the security update for the .NET Framework 4.5.2 in Windows Server 2012: March 8, 2016

October 11, 2016 This security update has been re-released to Windows Server Update Services (WSUS) channel because of an offering issue that may have affected some WSUS customers who had enabled the "automatically decline updates when a new revision causes them to expire" feature. There are no changes to the file payload. If you have already successfully deployed updates 3135994  and 3135995 (this update), you do not have to take any action.

May 10, 2016 This security update has been re-released and contains updated files. This re-release is intended for LDR (limited distribution release) content customers only. We determined that there were some issues in certain printing scenarios because of a missing dependency. If you use LDR content, we recommend that you apply this updated security update. There are no changes in this re-release for GDR (general distribution release) content customers.


This update resolves a vulnerability in the Microsoft .NET Framework. The security feature bypass exists in a .NET Framework component that does not properly validate certain elements of a signed XML document. To learn more about this vulnerability, see Microsoft Security Bulletin MS16-035.

How to obtain and install this 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 get security updates automatically, see the "Turn on automatic updating in the Control Panel" section of this Safety & Security Center article.

Method 2: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. To install this update, follow the install instructions on the download page.

Download Download security update 3135995

Update deployment information

For deployment information about this update, see Microsoft Knowledge Base article 3141780 .

Update removal information

Note We do not recommend that you remove any security update.

To remove this update, use the Programs and Features item in Control Panel.

Update restart information

This update does not require a system restart after you apply it unless files that are being updated are locked or are being used.

Update replacement information

This update replaces previously released update 3035489 .

Applies to

This article applies to the following:
  • Microsoft .NET Framework 4.5.2 when used with:
    • Windows Server 2012