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1993-11-23
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DOCUMENT:Q103828 22-NOV-1993 [W_NT]
TITLE :RAS Password Authentication Failed
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:BUGLIST3.10 FIXLIST3.10.001
--------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT Advanced Server version 3.1
- Microsoft Windows operating system version 3.1
--------------------------------------------------------------------
SYMPTOMS
========
Windows NT Remote Access Clients cannot be validated if the password
contains extended characters. Extended characters have ASCII codes
above 128.
CAUSE
=====
The situation surrounding this problem is very complex and it involves
several interrelated Windows NT bugs besides #996.
Basically, if your Windows NT RAS client password contains any
Extended characters, RAS client authentication will not properly
convert their case (that is, uppercase versus lowercase). This will
cause Windows NT RAS authentication to fail. It works fine for
characters "a-z" and "A-Z."
RESOLUTION
==========
Until a bug fix is released, do not use extended characters in your
Windows NT passwords. This is especially true for Remote Access and
Services for Macintosh.
STATUS
======
Microsoft has confirmed this to be a problem in Windows NT and Windows NT
Advanced Server version 3.1. This problem was corrected in the latest U.S.
Service Pack for Windows NT and Windows NT Advanced Server version 3.1. For
information on obtaining the Service Pack, query on the following word in
the Microsoft Knowledge Base (without the spaces):
S E R V P A C K
REFERENCES
==========
- For more information about why RAS must convert the character case
of passwords, query on the following words in the Microsoft
Knowledge Base:
RAS and LAN and Manager and Password and Authentication
- For more information about other Windows NT password authentication
problems, query on the following words in the Microsoft Knowledge
Base:
Windows and NT and Extended and Character and Password and
Problems
- For more information about Windows NT Authentication, query on the
following words in the Microsoft Knowledge Base:
INF and User and Authentication and Windows and NT
Addtional reference words: 3.10
KBCategory:
KBSubCategory: ntrmt
=============================================================================
THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.
Copyright Microsoft Corporation 1993.