SQL Server Error : 15007, Severity: 16. ‘%s’ is not a valid login or you do not

SQL Server Error : 15007 Details

SQL Server Error: 15007
Severity: 16
Event Logged or not: No
Description:
‘%s’ is not a valid login or you do not have permission.
Severity 16 Description:
Indicates general errors that can be corrected by the user.

Reading sql server error log location from SQL Query

Identifying SQL Server Error Log File used by SQL Server Database Engine can be done by reading SQL Server Error Logs. DBA can execute the XP_READERRORLOG extended stored procedure to read the SQL Server Error Log and search for its location used by the instance of SQL Server.

USE master
Go
xp_readerrorlog 0, 1, N'Logging SQL Server messages in file', NULL, NULL, N'asc'
Go

For other ways to read and find error log location please our article https://sqlserver-dba.co.uk/error-log/sql-server-identify-location-of-the-sql-server-error-log-file.html

Cause for SQL Server error 15007

Users and logins are not the same thing; here’s how to make a new LOGIN.

1. Run as administrator by right-clicking SQL Server Management Studio
2. Use the default Windows Authentication to log in.
3. Select System Databases -> master from the Databases menu. Upper left, click the “New Query” button.
4. Fill in the blanks with this inquiry. (See here for further information on SQL login options):
   CREATE YOUR USER’S LOGIN WITH THE PASSWORD ‘yourpassword’
5. You should receive the following response:
   The command(s) were successful.
6. Verify that it was added to
7. select * from master.dbo.syslogins
8. Close and restart SQL Management Server (as administrator), and then restart SQL Server by going to the SQL Server Configuration panel and selecting restart.
9. Click the main SQLEXPRESS -> Security -> Logins in the object explorer.
   Right-click on your freshly generated login to access it.

How to create a new user

1. Start SQL Server Management Studio as administrator.
2. Expand the database which you want to create the new database user.
3. Right click the “Security” folder choose “New User”, if the option isn’t available you probably clicked the server’s security folder.
4. Add the name, and configurations, and click OK.

Solution for Resolving the Error

SQL Server cannot find a login called Hiru, or you lack the privilege to create a user, according to the error message.

A server-level login offers access at the server level in the SQL Server security model. Each database’s logins are then paired with a user. Although it is not mandatory, the user usually has the same name as the login.

T-SQL makes it simple to create a login and user, as in:

USE master;
CREATE LOGIN [VRB] WITH PASSWORD = 'password';
USE mydb;
CREATE USER [VRB] FOR LOGIN [VRB];

Using a T-SQL script provides above we can have direct control over the process, and allows better troubleshooting.

Or
First create a global login under Security -> Logins

Then add the user in Databases -> Database -> Security -> Users

SQL Server Error Code and solution summary

SQL Server Error: 15007
Severity: 16
Event Logged or not: No
Description:
‘%s’ is not a valid login or you do not have permission.