Error 18456 Severity 14 State 27
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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 error 18456 severity 14 state 23 blogs.sentryone.com and SQLPerformance.com; has been a Microsoft MVP since 1997; tweets as @AaronBertrand; and speaks frequently at
Sql Server Error 18456 Severity 14 State 5
major conferences, user group meetings, and SQL Saturday events worldwide. Troubleshooting Error 18456 I think we've all dealt with error 18456, whether it be an error 18056 severity 20 state 27 application unable to access 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 error 18456 severity 14 state 38 nt authority system intentionally vague (the error message is 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
Error 18456 Severity 14 State 38 Sql 2008 R2
client's 18456 issues - once we tracked down the 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, th
= 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 error 18456 severity 14 state 11 nt authority anonymous logon have come across while working on SQL server. This message simply denotes error 18456 severity 14 state 5 login failed for user that the client call was able to reach the SQL server and then an ACCESS was denied
Error 18456 Severity 14 State 8 But Password Is Correct
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 http://sqlblog.com/blogs/aaron_bertrand/archive/2011/01/14/sql-server-v-next-denali-additional-states-for-error-18456.aspx file, if SQL server was allowed or configured to capture the failed 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 http://sql-articles.com/articles/troubleshooting/troubleshooting-login-failed-error-18456/ written into error log Accessing Error log: Now that, we know SQL server logs all login failed 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 err
Related Tips: More > Error Logs Problem SQL Server Error Logs often show a message related to error 18456. Although it generally means a login attempt from a client connection has failed, different State numbers associated with the error can mean different reasons for https://www.mssqltips.com/sqlservertip/2581/sql-server-error-18456-finding-the-missing-databases/ the failure. One of the error States is 38, which was added with SQL Server 2008, means the database being accessed cannot be found or does not exist. Unfortunately the Error Log entry does not show what database it is, so in this tip we walk through how you can determine which database is causing the error message. Solution A few days ago I was looking through the Error Log of a database server and noticed a large number of the error 18456 same error messages that looked like the following: 2011-12-15 11:22:08.76 Logon Error: 18456, Severity: 14, State: 38. 2011-12-15 11:22:08.76 Logon Login failed for user '