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Q241404: Dr. Watson Error in Userinit.exe When a User Logs On

Article: Q241404
Product(s): Microsoft Windows NT
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): kbenv kberrmsg
Last Modified: 06-AUG-2002

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0, Terminal Server Edition 
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SYMPTOMS
========

When a user logs on to a Terminal Server session, a Dr. Watson error in
Userinit.exe may be generated. The stack trace may look something like this:

FramePtr ReturnAd Param#1  Param#2  Param#3  Param#4  Function Name
0012f8f8 02e21dc2 00000000 00140d60 7ffdf000 006f0074 ntdll!wcscat
0012ff2c 02e2244b 02e20000 00000000 00140d60 0000000a userinit! <nosymbols>
0012ffc0 77f11397 00000000 00000000 7ffdf000 c0000005 userinit! <nosymbols>

The wcscat function should not have zero as the first parameter.

CAUSE
=====

This behavior can occur when the following conditions exist:

- A file date in the following registry key key is newer than the date of the
  file in the <Userprofile>\Windows folder:

  HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal
  Server\Install\IniFile Times

- The CITRIX_COMPAT_INISYNC (0x40) and CITRIX_COMPAT_WIN16 (0x04) .ini file
  synchronization flags are both set in the following registry key

  HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal
  Server\Compatibility\Applications\<name>

where <name> is the module name (typically, the .ini file name with the
.ini extension removed).

- The file has no period (.) in its name.


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:

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Keywords          : kbenv kberrmsg 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbNTTermServ400 kbNTTermServSearch
Version           : winnt:4.0
Issue type        : kbbug
Solution Type     : kbfix

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