We've noticed some unusual activity on your account. To help protect you from potential fraud or abuse, we've temporarily locked your account. We know this is frustrating, but we can help you get back into your account with just a few steps.
To unlock your account, you must enter a security code you receive via text message from Microsoft. The phone number you use to receive this text message doesn't need to be associated with your account. It doesn't even need to be your own phone number. If your phone doesn't receive text messages, ask a friend or family member if you can use theirs.
For more tips like this, check out the working remotely playlist at www.youtube.com/FoetronAcademy . Also, if you need any further assistance then you can raise a support ticket and get it addressed.