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FIX: The host application crashes when it verifies the signature in the manifest of the ClickOnce application that is created by using .NET Framework 3.5

You develop a ClickOnce application by using the Microsoft .NET Framework 3.5. You publish the ClickOnce application and then you install it in a host application. When the host application verifies the signature in the manifest of the ClickOnce application, the host application crashes.
This problem occurs because the System.Security.Cryptography.Xml.ManifestSignedXml.VerifyAuthenticodeSignature method uses native code instead of managed code.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


You must have the .NET Framework 3.5 Service Pack 1 (SP1) installed on the computer to apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
For all supported x86-based and x64-based versions of Windows Server 2000, of Windows XP, and, of Windows Server 2003
File nameFile versionFile sizeDateTimePlatform

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Call stack information

System.Core.dll!System.Security.Cryptography.Xml.ManifestSignedXml.VerifyAuthenticodeSignature(System.Xml.XmlElement signatureNode, System.Security.Cryptography.X509Certificates.X509RevocationFlag revocationFlag, System.Security.Cryptography.X509Certificates.X509RevocationMode revocationMode)                  System.Core.dll!System.Security.Cryptography.Xml.ManifestSignedXml.VerifySignature(System.Security.Cryptography.X509Certificates.X509RevocationFlag revocationFlag, System.Security.Cryptography.X509Certificates.X509RevocationMode revocationMode)                  System.Core.dll!System.Security.Cryptography.ManifestSignatureInformation.VerifySignature(System.ActivationContext application, System.Security.ManifestKinds manifests, System.Security.Cryptography.X509Certificates.X509RevocationFlag revocationFlag, System.Security.Cryptography.X509Certificates.X509RevocationMode revocationMode)

Article ID: 974892 - Last Review: 10/07/2011 16:18:00 - Revision: 2.0

  • Microsoft .NET Framework 3.5
  • Microsoft .NET Framework 3.5 Service Pack 1
  • kbexpertiseadvanced kbsurveynew kbqfe KB974892