Remote NDIS (RNDIS) devices may not work correctly after you perform a surprise removal on a Windows XP-based computer and then attach the RNDIS device to the computer again

Platí pro: Microsoft Windows XP ProfessionalMicrosoft Windows XP Home Edition


Consider the following scenario:
  • A Remote Network Driver Interface Specification (RNDIS) device is installed on a Windows XP-based computer, such as a USB radio device.
  • You perform a surprise removal of the RNDIS device from the computer.

    Note A surprise removal is when you remove the device without first notifying the operating system.
  • You attach the RNDIS device to the computer again.
In this scenario, the RNDIS device no longer works correctly. For example, the data application on the computer may report an error that the data transmission has failed. To resolve this problem, you have to restart the computer.


This problem occurs because, when a surprise removal occurs, a deadlock occurs between two Windows threads in the RNDIS miniport driver (Rndismpx.sys). This issue occurs when an object identifier (also known as OID) query is sent to the RNDIS device and the cable is removed before the computer receives a response.

Because of the deadlock, the RNDIS device is not removed from the system after the surprise removal. When this device is attached to this computer again, this device is not enumerated because the previous instance still exists. Therefore, this device no longer works correctly.


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.

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, submit a request to 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.


To apply this hotfix, you must have Windows XP Service Pack 2 or a later service pack installed on the computer.For more information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

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 XP with Service Pack 2, x86-based versions
File nameFile versionFile sizeDateTimePlatformSP requirement
Windows XP with Service Pack 3, x86-based versions
File nameFile versionFile sizeDateTimePlatformSP requirement


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

More Information

For more information about RNDIS and Windows, visit the following Web site: