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Applies to: 
SQL Server
Changes the password of an application role in the current database.
Important
This feature will be removed in a future version of SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. Use ALTER APPLICATION ROLE instead.
Transact-SQL syntax conventions
Syntax
sp_approlepassword
[ @rolename = ] N'rolename'
, [ @newpwd = ] N'newpwd'
[ ; ]
Arguments
[ @rolename = ] N'rolename'
The name of the application role. @rolename is sysname, with no default. @rolename must exist in the current database.
[ @newpwd = ] N'newpwd'
The new password for the application role. @newpwd is sysname, with no default. @newpwd can't be NULL.
Important
Don't use a NULL password. Use a strong password. For more information, see Strong Passwords.
Return code values
0 (success) or 1 (failure).
Remarks
sp_approlepassword can't be executed within a user-defined transaction.
Permissions
Requires ALTER ANY APPLICATION ROLE permission on the database.
Examples
The following example sets the password for the PayrollAppRole application role to B3r12-36.
EXECUTE sp_approlepassword 'PayrollAppRole', 'B3r12-36';