RE:
www.joomlapolis.com/forum/153-professional-member-support/229866-force-password-change#307346
Now a new need for this has arised because of GDPR. It is not allowed to send the password cleartext through unencrypted mail if we are talking about, that it could lead to disclosure of sensitive material about the user. Also a website might be forced to activate a password change request periodically - this is a realy urgent need for EU countries !
[MOD EDIT]: Please do not bump extremely old topics. Simply create a new topic and reference the old if you feel it's relevant.