This article describes hotfix rollup 3166737 for the Microsoft .NET Framework 4.5.2, 4.5.1, and 4.5. For more information about the issues that the hotfix rollup fixes, see the Issues that this hotfix rollup fixes section.

Resolution

The following file is available for download from the Microsoft Download Center:DownloadDownload the package now. 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. Note To verify the hotfix update version, check the value of the Release keyword to determine the installed version. To be forward-compatible, you can check for a value that's greater than or equal to the value that's listed in the following table.

Hotfix rollup version

Value of the Release DWORD

Hotfix rollup 3166737 for the .NET Framework 4.5 and later versions

380042

For more information about how to determine the .NET Framework versions, see How to: Determine which .NET Framework versions are installed.

More Information

Prerequisites

To apply this hotfix, you must have the .NET Framework 4.5.2, 4.5.1, or 4.5 installed.

Restart requirement

You have to restart the computer after you apply this hotfix if any affected files are being used. We recommend that you close all .NET Framework-based applications before you apply this hotfix.

Hotfix replacement information

This hotfix package doesn't replace a previously released hotfix package.

Issues that this hotfix rollup fixes

Workflow issueIf you're using the classes in System.Workflow.* and you're also using workflow tracking and have enabled FIPS compliance on the computer where the workflows are running, you must create the following AppSetting in the application's configuration file (or web.config for Workflow Services):

<add key="microsoft:WorkflowRuntime:FIPSRequired" value="true"/>

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