Originally Posted by
Chris Dokkanic
I was able to fix my problem logging on by resetting my password. My mobile app (android) worked for me without issue. I tried logging in from the web with it looping multiple times from multiple browsers/computers and it wouldn't allow login until resetting the password. I let their customer service know but it sounds like some sort of auth issue on their end. If you purposely type in your password incorrectly you will actually get an error ~"incorrect username/password" but when typing it in correctly, nothing. Resetting worked which I'm assuming updated their system responsible for authorization allowing login.
This did not work for me but I figured out the problem -- special characters. I was using some special characters in my password to, you know, be as secure as you can be when you access an insecure website like marriott.com.
Special characters in password == no workie.
No special characters in password == works
Marriott of course says you can use special characters in your password and this indeed used to work...but it no longer does. You can enter your password and it will not give you an error but it will not log you in (on the website). I did not test all special characters but at least one of the ones I used triggered the problem.
If you are having login problems on the website but not the app try resetting your password but make sure to NOT use special characters. Numbers are OK.