MS16-065: Description of the security update for the .NET Framework 4.6 and 4.6.1 in Windows Server 2012: May 10, 2016

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Summary

This security update resolves a vulnerability in the Microsoft .NET Framework. The vulnerability could cause information disclosure if an attacker injects unencrypted data in the target secure channel and then performs a man-in-the-middle (MiTM) attack between the targeted client and a legitimate server. To learn more about these vulnerabilities, see Microsoft Security Bulletin MS16-065 and the following article in the Microsoft Knowledge Base:
3155464 MS16-065: Description of the TLS/SSL protocol information disclosure vulnerability (CVE-2016-0149): May 10, 2016

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 security update 3142035

Update deployment information

For deployment information about this update, see Microsoft Knowledge Base Article 3156757.

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 does not replace any previously released update.

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File information

File hashFile name	SHA1 hash	SHA256 hash
Windows8-RT-KB3142035-x64.msu	16214840C752FB82C5B94C6CA75962D3EFB7FCF4	9F5B439F9F4EACACAEA91F8A246DE24C1B803A7C0A79EDDF0FD19E1022DEBEA1
File attributesThe English (United States) version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

For all supported x64-based versionsFile name	File version	File size	Date	Time	Platform
System.io.compression.filesystem.dll	4.6.1075.0	33,032	26-Feb-2016	03:21	x86
System.io.compression.filesystem.dll	4.6.1075.0	33,032	26-Feb-2016	03:21	x86
System.dll	4.6.1075.0	3,460,736	26-Feb-2016	03:21	x86
System.dll	4.6.1075.0	3,460,736	26-Feb-2016	03:21	x86
System.io.compression.filesystem.dll	4.6.1075.0	33,032	26-Feb-2016	03:21	x86
System.io.compression.filesystem.dll	4.6.1075.0	33,032	26-Feb-2016	03:21	x86
System.dll	4.6.1075.0	3,460,736	26-Feb-2016	03:21	x86
System.dll	4.6.1075.0	3,460,736	26-Feb-2016	03:21	x86

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How to obtain help and support for this security update

Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support

Applies toThis article applies to the following:

• Microsoft .NET Framework 4.6.1 when used with:
  • Windows Server 2012
• Microsoft .NET Framework 4.6 when used with:
  • Windows Server 2012