Microsoft KB Archive/324951

= FIX: Malformed ASF Header Might Cause NSUM or NSCM to Use 100 Percent of the CPU Capacity =

Article ID: 324951

Article Last Modified on 10/6/2005

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APPLIES TO


 * Microsoft Windows Media Services 4.1

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This article was previously published under Q324951



SYMPTOMS
When a client requests a file that has a malformed header, the service that made the request (NSUM or NSCM) might use 100 percent of the capacity of the CPU.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

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  Operating system 08-Jul-2002  20:28   4.1.0.3928   444,944   Nsum.exe   Windows 2000 08-Jul-2002  20:28   4.1.0.3928   220,816   Nscm.exe   Windows 2000

The following file is available for download from the Microsoft Download Center:

Download Wm324951.exe now

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Additional query words: netshow WMS DoS NSUM NSCM

Keywords: kbdownload kbbug kbfix kbqfe KB324951

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