Microsoft KB Archive/931297

= System calls that are made to serial devices may fail when you use the SUA UNIX interoperability component on a Microsoft Windows Server 2003 R2-based computer =

Article ID: 931297

Article Last Modified on 7/24/2007

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APPLIES TO

 Microsoft Windows Server 2003 Service Pack 2, when used with:  Microsoft Windows Server 2003 R2 Datacenter x64 Edition

 Microsoft Windows Server 2003 R2 Enterprise x64 Edition

 Microsoft Windows Server 2003 R2 Standard x64 Edition

 Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)</li></ul>

 Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)</li></ul>

 Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)</li></ul> </li> Microsoft Windows Server 2003 R2 Datacenter x64 Edition</li> Microsoft Windows Server 2003 R2 Enterprise x64 Edition</li> Microsoft Windows Server 2003 R2 Standard x64 Edition</li> Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)</li> Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)</li> Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)</li></ul>

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<div class="symptoms_section">

SYMPTOMS
When you use the Subsystem for UNIX-based Applications (SUA) UNIX interoperability component on a Microsoft Windows Server 2003 R2-based computer, you experience the following problems:
 * System calls that are made to serial devices may fail if there is no delay between the system calls. For example, if you use the open function to call a serial device immediately after you close the existing file descriptor for that serial device, the open function call fails.
 * The SUA ignores the ALT key when it is pressed together with the arrow keys.
 * The SUA cannot communicate with serial devices that do not support hardware flow control.

<div class="resolution_section">

Hotfix information
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
To apply this hotfix, you must have Windows Server 2003 Service Pack 1 (SP1) or Windows Server 2003 Service Pack 2 (SP2) installed on the computer. You should also have the Subsystem for Unix-based Applications (SUA)installed.

Note By default, Windows Server 2003 Service Pack 1 (SP1) is included with Windows Server 2003 R2. For more information about how to obtain Windows Server 2003 Service Pack 1 (SP1) or Windows Server 2003 Service Pack 2 (SP2), click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

914961 General information regarding Windows Server 2003 Service Pack 2

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 R2, x64-based versions
<div class="status_section">

STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

<div class="moreinformation_section">

MORE INFORMATION
For more information about the terms that are used to describe software updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Technical support for x64-based versions of Microsoft Windows
If your hardware came with a Microsoft Windows x64 edition already installed, your hardware manufacturer provides technical support and assistance for the Windows x64 edition. In this case, your hardware manufacturer provides support because a Windows x64 edition was included with your hardware. Your hardware manufacturer might have customized the Windows x64 edition installation by using 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 a Windows x64 edition. 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. If you purchased a Windows x64 edition such as a Microsoft Windows Server 2003 x64 edition separately, contact Microsoft for technical support.

For product information about Microsoft Windows XP Professional x64 Edition, visit the following Microsoft Web site:

http://www.microsoft.com/windowsxp/64bit/default.mspx

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

http://www.microsoft.com/windowsserver2003/64bit/x64/default.mspx

Keywords: kbwinserv2003sp1fix kbwinserv2003postsp2fix kbexpertiseinter kbbug kbfix kbhotfixserver kbqfe kbpubtypekc KB931297

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