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Error 18456 C/ Severity 14 C/ State 16

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SQL Server 2005 ★★★★★★★★★★★★★★★ SQL Server ConnectivityFebruary 21, 2006411 0 0 0 In continuing with the theme of understanding error messages I'll discuss the "login failed" messages that are surfaced by the client and

Sql Server Error 18456 Severity 14 State 16

written to the server's error log (if the auditlevel is set to log failures sql 2005 error 18456 severity 14 state 16 on login which is the default) in the event of an error during the login process. If the server encounters an

Error 18456 Severity 14 State 16. Login Failed For User

error that prevents a login from succeeding, the client will display the following error mesage. Msg 18456, Level 14, State 1, Server , Line 1Login failed for user ‘' Note that the message sql server error 18456 severity 14 state 5 is kept fairly nondescript to prevent information disclosure to unauthenticated clients. In particular, the ‘State' will always be shown to be ‘1' regardless of the nature of the problem. To determine the true reason for the failure, the administrator can look in the server's error log where a corresponding entry will be written. An example of an entry is: 2006-02-27 00:02:00.34 Logon Error: 18456, Severity: 14, State: 8.

2006-02-27 00:02:00.34 Logon Login failed for user ‘'. [CLIENT: ]

n The key to the message is the ‘State' which the server will accurately set to reflect the source of the problem. In the example above, State 8 indicates that the authentication failed because the user provided an incorrect password. The common error states and their descriptionsare provided in the following table:

ERROR STATE

ERROR DESCRIPTION

2 and 5

Invalid userid

6

Attempt to use a Windows login name with SQL Authentication

7

Login disabled and password mismatch

8

Password mismatch

9

Invalid password

11 and 12

Valid login but server access failure

13

SQL Server service paused

18

Change password required

Other error states indicate an internal error and may require assistance from CSS. Il-Sung LeeProgram Manager, SQL Server Protocols Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights

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Error 18456 Severity 14 State 38 Nt Authority System

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Error 18456 Severity 14 State 8

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 Severity 14 error https://blogs.msdn.microsoft.com/sql_protocols/2006/02/21/understanding-login-failed-error-18456-error-messages-in-sql-server-2005/ state 16 on our SQL Server 2005 ,login failed for user 'username' up vote 1 down vote favorite We had the problem with source: logon error:18456,severity:14, state 16 login failed for user 'user name' client [XXXX] XXXX: is our IP address on our SQL Server 2005 machine. The important points are The error came and gone by itself That to for only one database http://stackoverflow.com/questions/15515823/severity-14-error-state-16-on-our-sql-server-2005-login-failed-for-user-userna Mainly occurs at night (7pm-8am) Above error is very very less in day time (8am-6pm) Thanks in advance sql-server sql-server-2005 iis-6 share|improve this question edited Mar 20 '13 at 6:02 marc_s 452k938641029 asked Mar 20 '13 at 5:09 Manikanta 1114 What does this have to do with ii6 and c#-2.0? Also, what is your question?! –Danny Beckett Mar 20 '13 at 5:12 because above error is occurs in SQL server log but for clients the error will look like this Exception Details: System.Data.SqlClient.SqlException: Cannot open database "db" requested by the login.so i tagged in C# 2.0 The login failed. Login failed for user 'user'. –Manikanta Mar 20 '13 at 5:23 Understanding "login failed" blogs.msdn.com/b/sql_protocols/archive/2006/02/21/536201.asp‌x –Igor Borisenko Mar 20 '13 at 5:25 @Igor, it's all about the State, and there's no State 16 in that link. Early indications show me that State 16 is an old, generic message, meaning the db couldn't be opened. Either the user lacks permissions or the server is inaccessible: sqlblog.com/blogs/aaron_bertrand/archive/2011/01/14/… –Danny Beckett Mar 20 '13 at 5:28 add a comment| 2 Answers 2 active oldest votes up vote 0 down

for user 'sa'. If this is your first visit, http://www.dbforums.com/showthread.php?1633954-Error-18456-Severity-14-State-16-Login-failed-for-user-sa be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. error 18456 Results 1 to 12 of 12 Thread: Error: 18456, Severity: 14, State: 16. Login failed for user 'sa'. Tweet Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 09-16-08,05:37 error 18456 severity #1 TanveerAhmed View Profile View Forum Posts Registered User Join Date Jul 2008 Posts 9 Unanswered: Error: 18456, Severity: 14, State: 16. Login failed for user 'sa'. Hi, Since morning I have observed the following errors in sql 2005 error logs Error: 18456, Severity: 14, State: 16. Login failed for user 'sa'. [CLIENT: XXX.XXX.XX.XXX] (where XXX represents Ip address of client machine) After that the client machines are not getting connected to sql server. Actually I have 2 applications connected to the same sql server. One is working perfectly fine while the other is not able to connect. Both the applications are connected through sa. Can someone please help me to solve this issue. Note : SQL Server version is SQL Server 2005 standard Edition with SP2 Reply With Quote

 

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