- You have a computer that is running Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1.
- The computer works as a server where more than 50 users run applications by using Remote Desktop Protocol (RDP) at the same time.
- The server is running under unusual heavy processor (CPU) and network load.
In this case, the Microsoft Network Device Interface Specification (NDIS) driver detects that the network miniport driver does not respond to an object identifier request in two seconds, and then the request times out. In this situation, NDIS resets the network miniport driver. When there are a large number of OID requests issued from the same kernel thread, Windows may detect that the thread is taking up too much CPU time, causing Windows CPU quota enforcement to place the thread on the CPU idle queue. The NDIS driver does not protect the calling thread from being placed on the CPU idle queue, which can cause an OID request to time out.
In severe cases, all users lose TCP network connectivity, and access to their applications is disrupted.
Before you install this hotfix, check the prerequisite of the hotfix.
Hotfix for Windows 7 or Windows Server 2008 R2A 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 website: 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.
PrerequisitesTo apply this hotfix, you must first install SP1 in Windows 7 or Windows 2008 R2. For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
Registry informationTo use the hotfix in this package, you do not have to make any changes to the registry.
Restart requirementYou may have to restart the computer after you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace a previously released hotfix.
Article ID: 2974617 - Last Review: 22 Oct 2014 - Revision: 1