Logon Unknown Error 18456 C/ Severity 14 C/ State 58
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of Plan Explorer and a performance monitoring and event management platform for the Microsoft Data Platform and VMware. He has been blogging here at sqlblog.com since 2006, focusing on manageability, performance, and new features, and also blogs at blogs.sentryone.com and SQLPerformance.com;
Error 18456 Severity 14 State 8 But Password Is Correct
has been a Microsoft MVP since 1997; tweets as @AaronBertrand; and speaks frequently at major conferences, user sql server error 18456 severity 14 state 1 group meetings, and SQL Saturday events worldwide. Troubleshooting Error 18456 I think we've all dealt with error 18456, whether it be an application unable to access
Sql Server Error 18456 Severity 14 State 5
SQL Server, credentials changing over time, or a user who can't type a password correctly. The trick to troubleshooting this error number is that the error message returned to the client or application trying to connect is intentionally vague (the error message is error 18456 severity 14 state 5 login failed for user similar for most errors, and the state is always 1). In a few cases, some additional information is included, but for the most part several of these conditions appear the same to the end user. In order to figure out what is really going wrong, you need to have alternative access to the SQL Server and inspect the log for the true state in the error message. I helped our support team just today solve a client's 18456 issues - once we tracked down the error: 18456, severity: 14, state: 38. error log and saw that it was state 16, it was easy to determine that their login had been set up with a default database that had been detached long ago. In SQL Server 2012, there is a new feature called "contained databases" - I've blogged about it here and here. With this feature comes a new layer of security that may creep onto your radar if you use this functionality: contained user authentication failures. There are a variety of things that can go wrong here. If you connect with a contained user but forget to specify a database name, SQL Server will attempt to authorize you as a SQL login, and you will fail with state 5 (if there is no SQL login with that name) or state 8 (if there is also a SQL login with the same name and the password doesn't match). There is also a new state 65 which occurs if you have specified the correct username and contained database, but entered an incorrect password. The way that the authentication process works is, if SQL Server doesn't find your user in the contained database you specifies, it tries again at the server level, then gives up (it won't go check all the other contained databases in case you match there - I hope you agree that this is a good thing). If you don't specify a database in your connection string, then it won't succeed unless - by coincidence - you have a contained user with the same username
SQL Server 2005 ★★★★★★★★★★★★★★★ SQL Server ConnectivityFebruary 21, 2006411 Share 0 0 In continuing with the theme of understanding error messages I'll discuss
Error: 18456, Severity: 14, State: 6
the "login failed" messages that are surfaced by the client and written error 18456 severity 14 state 58 to the server's error log (if the auditlevel is set to log failures on login which is
Error: 18456, Severity: 14, State: 11.
the default) in the event of an error during the login process. If the server encounters an error that prevents a login from succeeding, the client will display the following http://sqlblog.com/blogs/aaron_bertrand/archive/2011/01/14/sql-server-v-next-denali-additional-states-for-error-18456.aspx error mesage. Msg 18456, Level 14, State 1, Server
= 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 http://sql-articles.com/articles/troubleshooting/troubleshooting-login-failed-error-18456/ SQL server. This message simply denotes that the client call was able to http://dba.stackexchange.com/questions/119141/i-am-getting-a-failed-login-message-in-the-sql-server-error-logs-however-nothin reach the SQL server and then an ACCESS was denied to the particular login for a reason. To figure out the exact 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 error 18456 logins. Configuring 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 error 18456 severity messages into its error log and 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
log in tour help Tour Start 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 more about hiring developers or posting ads with us Database Administrators Questions Tags Users Badges Unanswered Ask Question _ Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top I am getting a failed login message in the SQL Server error logs however, nothing actually failed? up vote 1 down vote favorite I have a server which runs third party software (called Visualcut) to email Crystal Reports to our users. When I log onto the Visualcut Server, I can open the software and then preview a report. This will ask me to enter a username and password (for an Microsoft SQL account) and then the report will display with no errors however, whenever I do this, an error is logged in the SQL Server error logs as follows: 10/26/2015 08:15:39 Logon Unknown Login failed for user ''. Reason: An attempt to login using SQL authentication failed. Server is configured for Windows authentication only. [CLIENT: 10.10.10.26] 10/26/2015 08:15:39 Logon Unknown Error: 18456 Severity: 14 State: 58. I don't understand why the report would authenticate seemingly without any issues however, the log file states otherwise. I would like to add that our SQL Server is configured to use mixed authentication. sql-server security authentication error-log crystal-reports share|improve this question edited Oct 26 '15 at 11:11 marc_s 5,41632843 asked Oct 25 '15 at 22:28 pgunston 195139 1 Open visual cut and when it asks for your credentials, go to the server and check if the authentication error has already been logged. Is it possible that when you try and run the report in Visual Cut, there is a data source already defined with the wrong username/passwod? It then prompts you for v