Hi @Jorziño Barradas,
Is your SQL Server in 'mixed mode authentication' ? This is necessary to login with a SQL server account instead of a Windows login.
You can verify this by checking the properties of the server and then SECURITY, it should be in 'SQL Server and Windows Authentication Mode'。
Make sure the Current User has full access to login to the SQL Server. If not, you may need to add the account to SQL Server Login.
Regards,
Zoe Hui
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