Microsoft KB Archive/873337

= A tape device unexpectedly goes offline and backup operations that use third-party backup software are not completed successfully in Windows Server 2003 =

Article ID: 873337

Article Last Modified on 7/24/2007

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APPLIES TO


 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems

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Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry



SYMPTOMS
You are using a tape device with a medium changer device and with third-party backup software on your Microsoft Windows Server 2003-based computer. Sometimes, Windows Server 2003 cannot control the medium changer device. The tape device unexpectedly goes offline, and backup operations are not completed successfully. You have to restart your computer to reset and restore connectivity to the medium changer device and to the tape device.



CAUSE
This issue occurs if the third-party backup software is not fully compliant with the Plug and Play feature in Windows Server 2003. When the medium changer and tape devices lose connectivity, the Plug and Play feature in Windows Server 2003 creates new names for the devices. The third-party software processes the names of the devices when the computer restarts. The third-party software does not recognize the new names, and the devices do not work as expected.



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
No prerequisites are required.

Restart requirement
You must restart your 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 tool in Control Panel.

Windows Server 2003, 32-bit editions
Date        Time   Version        Size    File name

21-Oct-2004 15:51  5.2.3790.224   15,360  Mcd.sys 21-Oct-2004 15:51  5.2.3790.224   20,480  Tape.sys

Windows Server 2003, 64-bit edition
Date        Time   Version       Size    File name --- 21-Oct-2004 16:51  5.2.3790.224  38,400  Mcd.sys 21-Oct-2004 16:51  5.2.3790.224  55,808  Tape.sys

Add the Persistence registry entry after you install the hotfix
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To enable this hotfix after you install it, add the Persistence registry entry to the following registry subkey, and then set the registry entry to 1:

When you set the Persistence registry entry to 1, symbolic names that are used by the Plug and Play feature in Windows Server 2003 are persistent. If you set the Persistence registry entry to 0 (zero), or if you remove the Persistence registry entry, symbolic names are not persistent.

To enable the hotfix, follow these steps:  Click Start, click Run, type regedit, and then click OK. Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Tape

 On the Edit menu, point to New, and then click DWORD Value. Type Persistence, and then press ENTER. Right-click the Persistence registry entry, and then click Modify.</li> Type 1 in the Value data box, and then click OK.</li> Quit Registry Editor.</li> Restart the computer.</li></ol>

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WORKAROUND
To work around this issue, restart the computer.

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

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MORE INFORMATION
Note This fix requires that Tape.sys be in use as the tape class device driver. This fix will have no effect if your backup solution uses a third-party tape class driver.

For more information about how to resolve this issue in Microsoft Windows 2000, click the following article number to view the article in the Microsoft Knowledge Base:

889330 A tape device unexpectedly goes offline, and backup operations using third-party backup software are not completed successfully in Windows 2000

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

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

Keywords: kbqfe kbhotfixserver kbbug kbfix kbwinserv2003presp1fix KB873337

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