Will setting PSO maxPasswordAge to -9223372036854775808 affect all users?

We are using ADFS to implement Single Sign On Solution. Our intended policy was to never expire the password. However we noticed that users are receiving password expiry page and decided to fix it. We changed our group policy setting maxPasswordAge to -9223372036854775808 (never). Still we get complaints that users are seeing password expiry, in fact, those who reset their password in the last couple of weeks. Will setting the maxpasswordage to -9223372036854775808  (never) will affect all users? Are we missing something? Please throw some light into this issue.

Note: MinimumPasswordAge is set to 0:00:01:00. Verified that the resultantpso is the correct policy.