Event Id 18456 Failed For User Login

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 '<user_name>'. (Microsoft SQL Server, Error: 18456)". Additional information returned to the client includes the following:

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 ''. (Microsoft SQL Server, Error: 18456)". Additional information returned to the client includes the following: "Login failed for user ...

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Make sure that the user specified in the description has a login created. If not, try creating one with the CREATE LOGIN command. See ME947378 and the link to "Microsoft event 18456 from source MSSQLServer" for details on fixing this problem.

Mar 05, 2009 · User ID is not valid. 5. User ID is not valid. 6. An attempt was made to use a Windows login name with SQL Server Authentication. 7. Login is disabled, and the password is incorrect. 8. The password is incorrect. 9. Password is not valid. 11. Login is valid, but server access failed. 12. Login is valid login, but server access failed. 18 ...

See the major causes of Microsoft SQL Server Login Failed Error 18456 and also get the simple solution of this error.

Than try to login using account that was used to install SQL Server and consider removing and adding back your login that doesn't work. For more info visit this forum thread. Does it work with new login? If nothing worked then create a new login and connect using SSMS. If works then problem is with your original login and not server config.

Jul 14, 2008 · Error/Event 18456 explained ... Event ID: 18456 Login failed for user 'AUser'. [CLIENT: xxx.xxx.xxx.xxx] It does not tell us much, except that the login failed for the user 'AUser'. Hopefully this is your SQL Server, and you know the DBA (or you are the DBA), then in order to get a little bit more

Nov 02, 2015 · Microsoft SQL Error 18456 shows login failed for user. From this easy tutorial you will know the manual and alternative solution (http://www.systoolsgroup.co...Author: Jason Clark

Jun 19, 2018 · User ID is not valid. 5: User ID is not valid. 6: An attempt was made to use a Windows login name with SQL Server Authentication. 7: Login is disabled, and the password is incorrect. 8: The password is incorrect. 9: Password is not valid. 11: Login is valid, but server access failed. 12: Login is valid login, but server access failed. 18 ...