SECURITY Lockout Counter After (the amount of time

SECURITY Lockout Counter After (the amount of time after which the invalid login attempts revert to zero, if you haven t exceeded them) are not applicable until you set Account Lockout Threshold to something other than zero. There are two password options for SQL Server logins: CHECK_ EXPIRATION and CHECK_POLICY. CHECK_EXPIRATION encompasses minimum and maximum password age, and CHECK_POLICY encompasses all the other policies. When you run afoul of either policy, the SQL Server login must be unlocked by the DBA, as shown shortly in an example. An administrator can add a new login through SQL Server Management Studio or by using the Transact-SQL statement CREATE LOGIN. The legacy stored procedure sp_addlogin will be supported for backward compatibility but will not expose the new features. As shown in the following example, you can create a new SQL Server login that requires the password to be changed on the user s first login attempt by using the MUST_CHANGE keyword. Attempting to access the SQL Server instance without changing the password will result in an error. CREATE LOGIN fred WITH PASSWORD = hy!at54Cq MUST_CHANGE, DEFAULT_DATABASE = pubs, CHECK_EXPIRATION = ON, CHECK_POLICY = ON go If a user has been locked out, the database administrator can unlock the login by using the following code. ALTER LOGIN fred WITH PASSWORD = hy!at54Cq UNLOCK go In those rare cases where the database administrator wants to turn off the password expiration enforcement or security policy enforcement, ALTER LOGIN can accomplish this. Neither of these statements will work when the MUST_CHANGEflag is set and the user has not yet changed his password. ALTER LOGIN fred WITH CHECK_EXPIRATION = OFF go ALTER LOGIN fred WITH CHECK_POLICY = OFF go

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