The Driver Verifier Manager tool verifies the Msnfsflt.sys file as "Unsigned" when you run the tool to detect the Msnfsflt.sys file on a Windows Server 2003 R2-based computer

Consider the following scenario:

• You are running a Windows Unified Data Storage Server 2003-based computer or a Windows Server 2003 R2-based computer.
• You run the Driver Verifier Manager tool (Verifier.exe) to detect the Microsoft Services for NFS Filter driver (Msnfsflt.sys). The Driver Verifier Manager tool is configured to use the default settings.

In this scenario, the Driver Verifier Manager tool verifies the Msnfsflt.sys file as �Unsigned� even though the Msnfsflt.sys file is a Microsoft product.

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 this specific problem. 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.

Prerequisites

This hotfix requires Windows Server 2003 Service Pack 1 (SP1) or Windows Server 2003 Service Pack 2 (SP2) to be installed on the computer.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any 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.

Windows Server 2003 with Service Pack 1, x86 version

Windows Server 2003 with Service Pack 2, x86 version

Windows Server 2003, x64 version

Windows Server 2003 with SP2, x64 version

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