Article ID: 153658
Article Last Modified on 10/28/2006
APPLIES TO
- Microsoft Windows NT 4.0
- Microsoft Exchange Server 4.0 Standard Edition
- Microsoft Exchange Server 5.0 Standard Edition
This article was previously published under Q153658
SYMPTOMS
The Microsoft Exchange Directory Synchronization Service (DXA) crashes when attempting to process an incoming Directory Synchronization (DirSync) message when running Windows NT version 4.0 Service Pack 2 (SP2) and 128 bit encryption. When you check the Windows NT Application Event log, you will find the following error:
NOTE: This error message is misleading because the problem really has nothing to do with lack of disk space.
CAUSE
The 128 bit encryption Security.dll that ships with Windows NT version 4.0 SP2 was rebased to a new address that, when loaded, blocked the DXA from creating the necessary memory mapped file it needs when processing DirSync messages.
WORKAROUND
To find out if the Security.dll files is based correctly, there are two methods. The first is to perform the following steps:
- Start the Windows NT Explorer.
- Change to the %systemroot%\system32 directory.
- Select the Security.dll file.
- From the File menu, click Quick View.
- Scan the Quick View window for the string "Image Base".
- If it shows 46480000, the file is incorrectly based.
The second method is to use Dumpbin.exe (available in Microsoft Development Studio).
Using Dumpbin.exe, verify that the DLL in question is indeed based at 46480000. This can be done with the following command:
DUMPBIN /HEADERS SECURITY.DLL
Scan the output for the OPTIONAL HEADERS SECTION looking for the 'image base' parameter. The following is a sample output of the incorrectly based DLL:
Microsoft (R) COFF Binary File Dumper Version 4.20.6164
Copyright (C) Microsoft Corp 1992-1996. All rights reserved.
Dump of file security.dll
PE signature found
File Type: DLL
FILE HEADER VALUES
14C machine (i386)
6 number of sections
3338158D time date stamp Tue Mar 25 10:12:29 1997
0 file pointer to symbol table
2D7 number of symbols
E0 size of optional header
2302 characteristics
Executable
32 bit word machine
Debug information stripped
DLL
OPTIONAL HEADER VALUES
10B magic #
3.10 linker version
7800 size of code
2E00 size of initialized data
0 size of uninitialized data
1000 address of entry point
1000 base of code
9000 base of data
----- new -----
46480000 image base<--- This is the parameter in question.
The file can be rebased to the original base address (77A80000) by running Rebase.exe against the DLL with the following command:
REBASE -b 77A80000 SECURITY.DLL
The server in question should be rebooted after this has been rebased.
STATUS
Microsoft has confirmed this to be a problem in Windows NT version 4.0 SP2 with 128 bit encryption. It has been fixed in Windows NT version 4.0 SP3.
MORE INFORMATION
Similar symptoms can also occur with Microsoft Exchange Server version 5.0. The event logged is:
The workaround and status sections apply to version 5.0 as well.
Additional query words: DXA.DBG DXA.EXE
Keywords: kbusage KB153658
