I can't log in to our help desk portal.

I can't log in to our help desk portal.

I am having problems logging into our help desk portal. Since the user changes their password in AD, the password is not replicated to our help desk, Enterprise Service Desk version. And the user cannot log in. We have already checked the integration with our AD, and it works without problems. We have already tested deleting the user in our help desk, and we have requested the integration and the user is integrated normally. But even so, it does not allow login, giving the message of Invalid user or password.