Clients cannot connect to a Terminal server when Csrss.exe and Termsrv.exe spike at 100 percent CPU usage

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SYMPTOMS

The Csrss.exe process and the Termsrv.exe process spike at 100 percent CPU usage on a Microsoft Windows 2000-based Terminal server, and clients cannot make new connections to the Terminal server. No other processes are running in the Terminal Services session.

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CAUSE

Csrss.exe does not receive a W32WinStationTerminate message because Termsrv.exe only waits five minutes for Csrss.exe to process the message. The CPU usage for Csrss.exe increases to 100 percent because, when Csrss.exe requests a new window message, the GetSMCommand command in Termsrv.exe fails.

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RESOLUTION

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:

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

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.

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) 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
-----------------------------------------------------------
26-Aug-2003  17:18   5.0.2195.6811    142,608   Termsrv.exe
26-Aug-2003  18:55   5.0.2195.6701     39,184   Winsta.dll

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