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Login failed for user 'username'. The user is not associated with a trusted SQL Server connection. (Microsoft SQL Server, Error: 18452)

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Author: Yuval Sinay MVP
Community Solutions ContentCommunity Solutions Content Disclaimer
Article ID:555332
Last Review:June 25, 2005
Revision:1.0

SUMMARY

The following knowledgebase article will help you to resolve error message "Login failed for user 'username'. The user is not associated with a trusted SQL Server connection. (Microsoft SQL Server, Error: 18452)" during SQL logon process.

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SYMPTOMS

During a logon process to SQL server the following error may appear: "Login failed for user 'username'. The user is not associated with a trusted SQL Server connection. (Microsoft SQL Server, Error: 18452)".

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CAUSE

The SQL server has been configured to operate in "Windows Authentication Mode (Windows Authentication)" and doesn't allow
the use of SQL accounts.

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RESOLUTION

Change the Authentication Mode of the SQL server from "Windows Authentication Mode (Windows Authentication)"
to "Mixed Mode (Windows Authentication and SQL Server Authentication)".

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MORE INFORMATION

 
Authentication Modes
 
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/adminsql/ad_security_47u6.asp
 
INF: How to Connect to an SQL Server 2000 Named Instance with the Previous Version's Client Tools
 
http://support.microsoft.com/default.aspx?scid=kb;en-us;265808
 

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APPLIES TO
•Microsoft SQL Server 2000 Enterprise Edition
•Microsoft SQL Server 2000 64-bit Edition
•Microsoft SQL Server 2000 Standard Edition

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Keywords: 
kbpubtypecca kbpubmvp kbhowto KB555332

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Community Solutions ContentCOMMUNITY SOLUTIONS CONTENT DISCLAIMER
MICROSOFT CORPORATION AND/OR ITS RESPECTIVE SUPPLIERS MAKE NO REPRESENTATIONS ABOUT THE SUITABILITY, RELIABILITY, OR ACCURACY OF THE INFORMATION AND RELATED GRAPHICS CONTAINED HEREIN. ALL SUCH INFORMATION AND RELATED GRAPHICS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT AND/OR ITS RESPECTIVE SUPPLIERS HEREBY DISCLAIM ALL WARRANTIES AND CONDITIONS WITH REGARD TO THIS INFORMATION AND RELATED GRAPHICS, INCLUDING ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, WORKMANLIKE EFFORT, TITLE AND NON-INFRINGEMENT. YOU SPECIFICALLY AGREE THAT IN NO EVENT SHALL MICROSOFT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY DIRECT, INDIRECT, PUNITIVE, INCIDENTAL, SPECIAL, CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF USE, DATA OR PROFITS, ARISING OUT OF OR IN ANY WAY CONNECTED WITH THE USE OF OR INABILITY TO USE THE INFORMATION AND RELATED GRAPHICS CONTAINED HEREIN, WHETHER BASED ON CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY OR OTHERWISE, EVEN IF MICROSOFT OR ANY OF ITS SUPPLIERS HAS BEEN ADVISED OF THE POSSIBILITY OF DAMAGES.

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