View products that this article applies to.

Summary

This update resolves vulnerabilities in the Microsoft .NET Framework. A security vulnerability exists in the .NET Framework that could allow an attacker to access information at rest that should be defended by cryptographic mechanisms. This update fixes the way that the Framework handles the key and therefore defends the data. To learn more about this vulnerability, see Microsoft Security Bulletin MS16-155.

Important

  • 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.

Additional information about this security update

For more information about this security update as it relates to Windows Server 2012, see the following article in the Microsoft Knowledge Base:

3205640 MS16-155: Security Update for the .NET Framework: December 13, 2016

How to obtain and install this update

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

On your WSUS server, follow these steps:

  1. Click Start, click Administrative Tools, and then click Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then click Action.

  3. Click Import Updates.

  4. WSUS will open a browser window in which you may be prompted to install an ActiveX control. You will need to install the ActiveX control to continue.

  5. Once the ActiveX control is installed, you will see the Microsoft Update Catalog screen. Type 3204801 in the Search box, and then click Search.

  6. Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Click Add to add them to your basket.

  7. When you have selected all the packages you need, click View Basket.

  8. Click Import to import the packages to your WSUS server.

  9. Click Close once the packages have been imported to return to WSUS.


The updates are now available for installation through WSUS.

Update deployment informationFor deployment information about this update, see Microsoft Knowledge Base Article 3205640.

Update removal informationNote 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 informationThis 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 informationThis update does not replace any previously released update.

File hash

Windows8-RT-KB3204801-x64.msu

D87B2673BB4B2A846EAADCAADBC7C2F5081AD05A

AE7F1838BDCF8A1B4C1A93738E4D40E07DF3C2C76DF55B6FE6067905DBD9F665

File attributes

The 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.

File name

File version

File size

Date

Time

msvcp120_clr0400.dll

12.0.52512.0

690,016

10-Aug-2016

05:03

msvcr120_clr0400.dll

12.0.52512.0

993,632

10-Aug-2016

05:03

system.data.dll

4.6.1636.0

3,454,640

30-Nov-2016

06:43

msvcp120_clr0400.dll

12.0.52512.0

484,552

10-Aug-2016

05:03

msvcr120_clr0400.dll

12.0.52512.0

987,848

10-Aug-2016

05:03

system.data.dll

4.6.1636.0

3,389,616

30-Nov-2016

06:49


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 4.6.2 when used with:

    • Windows Server 2012

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Thank you for your feedback!

×