Some network adapter miniports or Network Driver Interface Specification (NDIS) intermediate drivers send the status message of "NDIS_STATUS_CLOSING" to bound protocols when shutting down. This NDIS status causes Network Monitor's protocol driver to fail with the bugcheck error: DRIVER_IRQL_NOT_LESS_OR_EQUAL (0xd1)
Network adapter miniports or NDIS drivers do not have to indicate NDIS_STATUS_CLOSING, and when possible, drivers that do so must be corrected. However, in those scenarios where this cannot be done, this hotfix contains a replacement Network Monitor protocol driver that can correctly handle this status.
Service Pack InformationTo resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
Hotfix InformationA 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.
The English version of this fix has the file attributes (or later) 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.
Date Time Version Size File name
01-Apr-2003 20:32 5.0.2195.6699 37,552 Nmnt.sys
This problem was first corrected in Microsoft Windows 2000 Service Pack 4.