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FIX: DCOM communication uses many TCP/IP connections
Article ID: 832484 - View products that this article applies to.
After you install Microsoft Windows 2000 Service Pack 4 (SP4), or you apply any Microsoft COM+ Rollup Hotfix that is later than COM+Rollup Hotfix Package 20, you may notice many TCP/IP connections to port 135.
A change in DCOM that was first made in COM+ Rollup Hotfix Package 21 causes a part of DCOM to use the Negotiate security package instead of the NTLM security package. The Negotiate package does not have correct credential pooling logic, forcing DCOM to create many connections in some situations.
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:
http://support.microsoft.com/contactus/?ws=supportNote 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.
PrerequisitesYou must have Microsoft Windows 2000 Service Pack 3 (SP3) or later installed on your computer.
Restart requirementYou must restart your computer after you apply this hotfix.
File informationThe 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 ---------------------------------------------------------- 08-Dec-2003 23:48 5.0.2195.6824 124,688 Adsldp.dll 08-Dec-2003 23:48 5.0.2195.6824 132,368 Adsldpc.dll 08-Dec-2003 23:48 5.0.2195.6824 63,760 Adsmsext.dll 08-Dec-2003 23:48 5.0.2195.6876 381,712 Advapi32.dll 08-Dec-2003 23:48 5.0.2195.6866 69,904 Browser.dll 08-Dec-2003 23:48 5.0.2195.6824 136,464 Dnsapi.dll 08-Dec-2003 23:48 5.0.2195.6876 96,528 Dnsrslvr.dll 08-Dec-2003 23:48 5.0.2195.6866 47,376 Eventlog.dll 08-Dec-2003 23:48 5.0.2195.6871 148,240 Kdcsvc.dll 08-Dec-2003 23:28 5.0.2195.6881 206,096 Kerberos.dll 21-Sep-2003 00:32 5.0.2195.6824 71,888 Ksecdd.sys 08-Dec-2003 23:30 5.0.2195.6881 511,248 Lsasrv.dll 08-Dec-2003 23:30 5.0.2195.6881 33,552 Lsass.exe 17-Oct-2003 00:33 5.0.2195.6866 114,960 Msv1_0.dll 08-Dec-2003 23:48 5.0.2195.6866 307,984 Netapi32.dll 08-Dec-2003 23:48 5.0.2195.6863 361,232 Netlogon.dll 08-Dec-2003 23:48 5.0.2195.6874 931,600 Ntdsa.dll 08-Dec-2003 23:48 5.0.2195.6876 392,464 Samsrv.dll 08-Dec-2003 23:48 5.0.2195.6824 113,936 Scecli.dll 08-Dec-2003 23:48 5.0.2195.6824 259,856 Scesrv.dll 06-Nov-2003 22:29 5.0.2195.6870 5,847,552 Sp3res.dll 08-Dec-2003 23:48 5.0.2195.6824 48,912 W32time.dll 21-Sep-2003 00:32 5.0.2195.6824 57,104 W32tm.exe 08-Dec-2003 23:48 5.0.2195.6869 126,224 Wldap32.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
816915For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/816915/ )New file naming schema for Microsoft Windows software update packages
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
Article ID: 832484 - Last Review: October 26, 2005 - Revision: 1.6