Password Case Sensitivity and System Error 1219

This article was previously published under Q98724
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Password validation in a Windows NT network is case-sensitive as longas the machine you are logged onto and the machine whose resource youare trying to access are both Windows NT machines; the case of thepassword entered and the password stored in the Windows NT userdatabase must match. However, if a logon procedure takes place on anon-Windows NT machine (a Windows for Workgroups machine, for example)or the share being accessed is on a non-Windows NT server (even if theserver is in a Windows NT domain), password validation becomes case-insensitive. There is one exception to these rules and one error thatresults from mismatched case in passwords.

The exception is that if you change your password from a non-WindowsNT machine (using the Windows NT NET PASSWORD command), Windows NTstores your new password as a case-insensitive password and permitsall subsequent log ons to be password case-insensitive. Even ifanother user logs on from a Windows NT machine, no password casechecking is performed.

An error can be generated if you mismatch the case of your passwordafter you've already logged onto a Windows NT domain. For example, ifyou establish a network session with a Windows NT machine by typingthe following two lines
net use x: \\ntmachine\data /u:domain\user PASSWORD net use y: \\ntmachine\apps /u:domain\user password

the following error message is displayed:

System error 1219 has occurred. The credentials supplied conflict with an existing set of credentials.

To avoid this error message, make sure you always use the same casewhen attempting to connect to shared resources.
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Article ID: 98724 - Last Review: 12/04/2015 09:27:05 - Revision: 1.1

Microsoft Windows NT Advanced Server 3.1, Microsoft Windows NT Workstation 3.1, Microsoft Windows NT Server 3.51, Microsoft Windows NT Server 4.0 Standard Edition, Microsoft Windows NT Workstation 3.51, Microsoft Windows NT Workstation 4.0 Developer Edition

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