# Resetting the db\$1owner role membership for master user for Amazon RDS for SQL Server
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If you lock your master user out of the `db_owner` role membership on your RDS for SQL Server database and no other database user can grant the membership, you can restore lost membership by modifying the DB instance master user password. 

By changing the DB instance master user password, RDS grants the `db_owner` membership to the databases in the DB instance that might have been accidentally revoked. You can change the DB instance password by using the Amazon RDS console, the AWS CLI command [modify-db-instance](https://docs.aws.amazon.com/cli/latest/reference/rds/modify-db-instance.html), or by using the [ModifyDBInstance](https://docs.aws.amazon.com/AmazonRDS/latest/APIReference/API_ModifyDBInstance.html) API operation. For more information about modifying a DB instance, see [Modifying an Amazon RDS DB instance](Overview.DBInstance.Modifying.md).