Mandatory password change?
 

I just tried logging in to my Marriot Rewards account and got the following message:

Anyone else have this experience? Is there a security problem at Marriott's end?

I got that a few weeks ago.

https://www.flyertalk.com/forum/marr...-password.html

So did you get locked out in changing your password as discussed in the thread you've referenced? Or did the change work properly?

My change order was out of the blue. No email advising me to change the password in advance.

It worked fine for me, but I know others had problems.

I had to go through the help desk - spent about half an hour on the phone with them (mostly on hold) to get an access code, a working password change portal, and to put through the change.

I'm annoyed that this came through with no notice. I never got the email - which should have been sent to everyone who would have to change their passwords, regardless of what other preference settings one has.