DOCUMENT:Q150530 20-FEB-2002 [winnt] TITLE :Event ID 529 Unknown User Name Or Bad Password PRODUCT :Microsoft Windows NT PROD/VER::3.5,3.51 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server versions 3.5, 3.51 - Microsoft Windows 95 ------------------------------------------------------------------------------- SUMMARY ======= After you add newly created user accounts to a domain, you may notice that Windows 95 clients cannot log on to the domain with any of the newly created accounts. The Windows 95 clients will report the following error: User name cannot be found The same Windows 95 clients can log on to the domain with previously existing user accounts. You will also notice that Windows NT workstations can log on to the domain with these newly created accounts. Check the primary domain controllers (PDCs) Event Viewer Security Log for the following: Event ID 529 Description: Logon Failure: Reason: Unknown user name or bad password User Name: GUEST Domain: NameOfYourDomain Logon Type: 3 Logon Process: NCPSrv Authentication Package: Workstation Name: NOTE: Your entries may vary, that is, the user name will not always be GUEST. MORE INFORMATION ================ The above scenario has been linked to other domain controllers in the domain running out of resources. At this point, you will need to check all of the servers in the domain that validate user accounts. Check all the servers in the domain that validate user accounts for: - servers that are running out of disk space. - servers that have stopped responding (this may mean actually visiting the server). - servers that report Event IDs stating they have not been able to synchronize with the PDC. The server will report that insufficient system resources exist to complete the requested service. After you find the domain controller with insufficient system resources, you may either take that server offline, so that it is not involved in the validation process, or fix the resource problem and re-synchronize the domain controller with its PDC. If the problem persists, you may need to take a trace of the Windows 95 computer while it is trying to log on to the domain to help further identify problem areas. Additional query words: ====================================================================== Keywords : kbnetwork Technology : kbWinNTsearch kbWinNT351search kbWinNT350search kbWinNTSsearch kbWinNTS351 kbWinNTS350 kbWinNTS351search kbWinNTS350search kbWin95search kbZNotKeyword3 Version : :3.5,3.51 ============================================================================= 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 2002.