Article: Q255890
Product(s): Microsoft Windows NT
Version(s): 4.0; winnt:4.0
Operating System(s):
Keyword(s): kbDCOM kbGrpDSCom kbDSupport
Last Modified: 08-AUG-2001
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The information in this article applies to:
- Microsoft Windows NT Advanced Server, version 4.0
- Microsoft Windows NT Server version 4.0
- Microsoft Windows NT Server version 4.0, Terminal Server Edition
- Microsoft Windows NT Server, Enterprise Edition version 4.0
- Microsoft Windows NT Workstation version 4.0
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SYMPTOMS
========
When a Distributed Component Object Model (DCOM) client makes a remote method
call to pass a callback interface pointer to the server, and the SYSTEM account
does not have access permissions on the client computer, a problem may occur. If
the User Datagram Protocol (UDP) is used, the client may stop responding (hang).
If the Transmission Control Protocol/Internet Protocol (TCP/IP) is used, the
application may return the E_OUTOFMEMORY error.
CAUSE
=====
By default, the SYSTEM account does not have access permissions on the client
computer; as a result, DCOM cannot marshall the callback interface pointer.
RESOLUTION
==========
To resolve this problem, give access permissions to the SYSTEM account. For DCOM
to work, you must assign access permissions to the SYSTEM account.
MORE INFORMATION
================
To check the default access permissions, perform the following steps:
1. Start Dcomcnfg.exe.
2. Click the Default Security tab, and then click Edit Default for default
access permissions. The list must include SYSTEM: allow access. If the list
is empty, then the launching user and the SYSTEM account have access
permissions.
REFERENCES
==========
For more information on COM security, see the following MSDN Online Library help
topic:
http://msdn.microsoft.com/library/psdk/com/security_0icz.htm
Additional query words: SYSTEM hang
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Keywords : kbDCOM kbGrpDSCom kbDSupport
Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbWinNTS400 kbWinNTAdvSerSearch kbWinNTAdvServ400 kbNTTermServ400 kbNTTermServSearch
Version : :4.0; winnt:4.0
Issue type : kbprb
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