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1993-11-16
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DOCUMENT:Q102378 04-NOV-1993 [W_NT]
TITLE :Blank Password Avoids Change/Uniqueness Protections
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:
-----------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT operating system, version 3.1
- Microsoft Windows NT Advanced Server, version 3.1
-----------------------------------------------------------------------
SYMPTOMS
========
If the administrator creates a new account but doesn't enter a
password, the "User Must Change Password at Next Logon" check box
doesn't seem to work: when you next logon, Windows NT asks for a new
password but will accept a blank password.
CAUSE
=====
Even when a password history is in effect, you can still change your
password from a blank password to a blank password. The password
uniqueness setting should not allow this.
Blank passwords are not stored in the password history, so you can
change your password to a blank password at any time -- even if you
used a blank password more recently than the password uniqueness
setting is supposed to allow.
Steps to Reproduce Behavior
---------------------------
1. Create a new user without entering a password.
2. Choose User Must Change Password.
3. Logon as that user. You are asked to enter a new password.
4. At the prompt to enter a new password, choose OK.
Windows NT responds that the password is successfully changed. In
reality, you still have a blank password.
Additional reference words: 3.10
KBCategory:
KBSubCategory: scrty
=============================================================================
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.