Prevent Office 365 from requesting phone number

Question

I've been using Office 365 (federated against my domain) for several months.  Recently when I login to http://portal.office.com, the site complains I need to Add information to your account so you don't lose access if you ever forget your password:

Clicking Set it up now takes me to this screen:

^{To make sure you can reset your password, we need to collect some into so we can verify who you are.  We won't use this to spam you – just to keep your account more secure.  You'll need to set up at least 1 of the options below.  ...}

Question

How do I disable this prompt? My account is federated to my domain, so if I forgot my password I would contact my Domain Admin, not Microsoft.

Update

I am not the Domain Admin, but I've checked with him and he hasn't intentionally set any configuration on my account to force this verification behavior.

Answer 1

This option comes up when Self Service Password Reset has been enabled. In order to authenticate when you want to reset your password, you'll need to use one of the authentication options you are being asked to provide. It's a good thing.