18456 Sql Server Error Severity 14 State 1
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Error 18456 Severity 14 State 38. Sql Server 2008 R2
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Microsoft Sql Server Error 18456 State 1
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Details Product Name SQL Server Event ID 18456 Event Source MSSQLSERVER Component SQLEngine Symbolic Name LOGON_FAILED Message Text Login failed for user '%.*ls'.%.*ls Explanation When a connection attempt is rejected because of an authentication failure that involves a bad password or user name, a message similar to the following is returned to the client: "Login failed for user ' here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn turning on windows+sql server authentication more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question 18456 sql server authentication 2014 x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Unable https://msdn.microsoft.com/en-us/library/cc645917.aspx to login to SQL Server + SQL Server Authentication + Error: 18456 up vote 77 down vote favorite 17 I have created login account on my localhost\sql2008 Server (Eg. User123) Mapped to Database (default) Authentication Mode on SQL Server is set to both (Windows and SQL) But login to SQL Server fails with following message (for User123) Note: Have checked multiple time that http://stackoverflow.com/questions/2474839/unable-to-login-to-sql-server-sql-server-authentication-error-18456 UserName / Password are typed in correctly Error Details: Login failed for user 'User123' (Net.SqlClient Data Provider) Server Name : localhost\sql2008 Error Number: 18456 Severity : 14 State : 1 Line Number : 65536 any help on this please. sql-server sql-server-2008 share|improve this question edited Jan 4 '13 at 6:41 asked Mar 19 '10 at 3:38 Sreedhar 9,7122379134 1 Test both the sql and windows authentication access through SqlServer Management Console for the user and see if you can access with the above account. What data provider and connection string are you using? –Joe Pitz Mar 19 '10 at 3:51 1 Am trying to login in SSMS and it throws above error. –Sreedhar Mar 19 '10 at 3:52 1 Are you running vista? –Joe Pitz Mar 19 '10 at 3:57 1 Its WindowsXP with SP3 –Sreedhar Mar 19 '10 at 3:58 1 You can login as admin account? –Joe Pitz Mar 19 '10 at 4:06 | show 1 more comment 4 Answers 4 active oldest votes up vote 28 down vote accepted By default login failed error message is nothing but a client us = 18456 Output: Login failed for user ‘%.*ls'.%.*ls%.*ls This is one of the infamous error message (and number) that most of the DBAs and developers have come across while working on SQL server. http://sql-articles.com/articles/troubleshooting/troubleshooting-login-failed-error-18456/ This message simply denotes that the client call was able to reach the SQL server and then an ACCESS was denied to the particular login for a reason. To figure out the exact http://blog.sqlauthority.com/2015/08/19/sql-server-login-failed-for-user-reason-token-based-server-access-validation-failed-with-an-infrastructure-error/ reason, this error number 18456 with its STATE number is logged into the SQL server error log file, if SQL server was allowed or configured to capture the failed logins. Configuring SQL server sql server for capturing login failures: By default, SQL server is configured to capture only failed logins but it can be changed to any of the options as mentioned in this books online link http://technet.microsoft.com/en-us/library/ms188470.aspx Below figure shows these options to have login failed messages written into error log Accessing Error log: Now that, we know SQL server logs all login failed messages into its error log and sql server error windows event viewer but how do I access them? Windows event viewer: GO to start –> Run –> Eventvwr –> open up the application logs, and now we could see the login failed error message with computer name, instance name, date and time and finally the reason for the login failed SQL Error log: SQL server error log can be viewed from multiple places If we have gained access or can gain access to SQL server with different logon credentials then always use sp_readerrorlog, xp_readerrorlog or use the GUI option of opening up Management node –> SQL server Logs –> View –> SQL server log. Same sample shown above looks like In a case where we cannot gain access to SQL server, then we may use the actual error log path and open the txt file physically from the file system. Use SQL server configuration manager to find the error log path and from there you could open the file. Get the value next to –e parameter and that gives the actual error log file location Typically the error log files are available in install directory for SQL server. SQL server 2005: C:\MSSQL\MSSQL.1\MSSQL\LOG\Errorlog SQL server 2008: C:\MSSQL\MSSQL10.instanceID\MSSQL\Log\Erro SERVER - Login failed for user . Reason: Token-based server access validation failed August 19, 2015Pinal DaveSQL9 commentsThis is one of the most common error searched on my blog search (http://search.sqlauthority.com) and lately I realized that I have not written any blog about the cause of such error and fixing that. Let us learn about how to fix the error login failed.If you ever talk to an SQL Expert about login failed for user, he/she might ask for the state of the message or complete error message. All login failed for user message would have error number 18456 but the state of the message in the ERRORLOG would tell the exact cause of login failure. It is important to note that SQL Server does not tell the exact state to the client and it would be a state 1 always.Login failed for user ‘sa'. (.Net SqlClient Data Provider) -------------------- Server Name: BIGPINAL Error Number: 18456 Severity: 14 State: 1 Line Number: 65536If you are new to SQL Server then use below to find ERRORLOG SQL SERVER – Where is ERRORLOG? Various Ways to Find its LocationHere is the message in ERRORLOG fileError: 18456, Severity: 14, State: 58. Login failed for user ‘sa'. Reason: An attempt to login using SQL authentication failed. Server is configured for Windows authentication only. [CLIENT: Error Number: 233 Severity: 20 State: 0