SYMPTOMS
A leak occurs in the Netbt.sys file in the following Terminal Server environments:
- Microsoft Windows Server 2003 Service Pack 1 (SP1) Terminal Server
- Microsoft Windows Server 2003 Terminal Server
These environments have many NetBIOS over TCP/IP (NetBT) connections. The leak in the Netbt.sys file exhausts all available TCP endpoints for outgoing traffic. This problem occurs in Terminal Server environments with thousands of log on and log off transactions per day.
Note This problem may also affect servers that do not have Terminal Server enabled.
When you use the Tdimon.exe tool on Terminal Server, you receive an error message that resembles the following:
0xC000020A STATUS_ADDRESS_ALREADY_EXISTS
Note You must restart the computer after you receive this error.
When you run the
nltest /sc_query command on Terminal Server, you receive an error message that resembles the following:
ERROR_NOT_ENOUGH_MEMORY
When you run the
netdom query fsmo command on Terminal Server, you receive an error message that resembles the following:
RPC_SERVER_UNAVAILABLE
Note x64-based versions of Windows Server 2003 include Windows Server 2003 SP1.
RESOLUTION
Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
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 usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
Prerequisites
To install this hotfix, you must have Windows Server 2003 Service Pack 1 (SP1) installed on your computer.
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 file attributes) 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 item in Control Panel.Windows Server 2003, Itanium-based versions
|
| Netbt.sys | 5.2.3790.2659 | 560,128 | 13-Mar-2006 | 14:57 | IA-64 |
Windows Server 2003, x64-based versions
|
| Netbt.sys | 5.2.3790.2659 | 379,392 | 13-Mar-2006 | 14:55 | x64 |
Windows Server 2003, x86-based versions
|
| Netbt.sys | 5.2.3790.2659 | 179,712 | 14-Mar-2006 | 02:24 | x86 |