When you install Subsystem for UNIX-based Applications (SUA) and Microsoft Services for Network File System (NFS) on a Microsoft Windows Server 2003 R2-based computer that is running Microsoft Internet Information Services (IIS), the following Error event is logged in the System log: Additionally, Subsystem for UNIX-based Applications does start successfully.

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This problem occurs because SUA cannot contact the mapping server during startup because the mapping server is not configured, not reachable, or has not started yet.

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To work around this problem, configure the Startup type for SUA. After you do this, the Error event that is mentioned in the “Symptoms” section will no longer occur.

To configure the Startup type for SUA, follow these steps:

1.	Click Start, click Run, type services.msc, and then click OK.
2.	Double-click the SUA Subsystem Startup service.
3.	Select Disabled or Manual in the Startup type box, and then click OK.

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

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For more information about Subsystem for UNIX-based Applications, visit the following Microsoft Web page:

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Technical support for x64-based versions of Microsoft Windows

Your hardware manufacturer provides technical support and assistance for x64-based versions of Windows. Your hardware manufacturer provides support because an x64-based version of Windows was included with your hardware. Your hardware manufacturer might have customized the installation of Windows with unique components. Unique components might include specific device drivers or might include optional settings to maximize the performance of the hardware. Microsoft will provide reasonable-effort assistance if you need technical help with your x64-based version of Windows. However, you might have to contact your manufacturer directly. Your manufacturer is best qualified to support the software that your manufacturer installed on the hardware.

For product information about Microsoft Windows XP Professional x64 Edition, visit the following Microsoft Web site: For product information about x64-based versions of Microsoft Windows Server 2003, visit the following Microsoft Web site:

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