SQL Server required change password

Question

How to block SQL Server forcing password change and sudden deactivation of old password? My application connects to the database and suddenly, after about 2/4 weeks, it loses connection with the database, and when I run SSMS and logging in, autherication: SQL Server Authentication requires set a new password.

Answer 1

ALTER the LOGIN to have CHECK_EXPIRATION set to OFF :

ALTER LOGIN YourLogin WITH CHECK_EXPIRATION = OFF;

This is (at least for current versions) by default set to OFF , which likely means that the password is expiring by design though. If so I would suggest double checking before that not expiring the password is now intended as ON would needed to have been explicitly turned ON previously.