MS just enabled a security check the other day to ban the use of "simple" passwords like "password" and "12345". If you had a simple password it would seem logical that they forced a password change on all those accounts when they enabled the feature. I have not heard anything in security circles to confirm they would do this on existing simple passwords as well as new ones, just a theory.
If this does sound like it is you, do not confirm in this forum and change that simple password if you used it on any of your other online services as you may have accidentally advertised publically that you are an easy target if you used the simple password for Facebook, your bank etc.
Rob
rvtechwithrvrob.com