Moreover, check out if the Windows Active Directory has SQL login information associated. If Windows authentication is enabled and the error is received, then use the SQL SA credentials. If Windows Vista or Windows 7 is used, then run SQL Server through Run as Admin option. This can also happen while disabling the username on server.ĭownload Trial Version of SQL Password Recovery Toolġ00% Secure Steps to Fix SQL Server Error 18456īefore we get started with the troubleshooting steps, make sure that the login credentials (username and password) entered is correct. This generally happens when the “Windows Authentication” is enabled under the security section and SQL Server is unable to recognize the user.ģ: Possibility is that the password for login is expired. Cause of Microsoft SQL Server login failed error 18456:ġ: At the time of Server login, if either the username or password is incorrect, the error will be generated.Ģ: When an SQL Server instance is logged in for the very first time, possibility is that the users encounter SQL Server error 18456. However, the administrator can check out the event log in order to get details about occurrence of SQL Server error 18456. This is an intended development of the application in order to have protection against unauthorized users (probably, someone is trying to have entry to the server on the basis of guess information).

But unfortunately, in case of SQL Server error 18456 on screen, no cause of login failure is displayed. Most of the time, an error code comes up with a description that gives a hint about what has gone wrong.

This error can be confronted in spite of the SQL Server edition or its type (Enterprise or Express) in use. When this error occurs, the server name entered is correct, but because of some unanticipated reasons, the permission to login cannot be granted. Microsoft SQL Server login failed error 18456 can be encountered due to varied reasons.

Stacy Brown | January 2nd, 2019 | SQL Master Database |

Microsoft sql error 18456 state 1