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Article ID: 2903919 - Last Review: July 24, 2014 - Revision: 3.0

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Microsoft has released security bulletin MS13-103. To view the complete security bulletin, visit the following Microsoft website: The following file is available for download from the Microsoft Download Center:

For ASP.NET SignalR 1.1.x and SignalR 2.0.x

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Download the package now. (

Release Date: December 10, 2013

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591  ( ) How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

How to obtain help and support for this security update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support (

Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center (

Local support according to your country: International Support (


The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

AspNet file information

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File nameFile versionFile sizeDateTime
Microsoft.AspNet.SignalR.Core.dll2.0.21023.5319, 48823-Oct-201302:20
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Applies to

  • ASP.NET SignalR 1.1.x
  • ASP.NET SignalR 2.0.x
Note These updates apply to Windows-based servers that host web applications that support ASP.NET SignalR functionality. These updates are available only for download, and they update versions 1.1.0, 1.1.1, 1.1.2, 1.1.3, and version 2.0.0 to the latest supported versions (1.1.4 and 2.0.1, as of the date of this bulletin). See the "Security Update Deployment" section of the security bulletin ( for more information.
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