Over the next couple days we will roll out a major upgrade to Microsoft account, including optional two-step verification to help keep your account more secure.
This release enables optional two-step verification for your entire Microsoft account. Two-step verification is when we ask you for two pieces of information anytime you access your account — for example, your password plus a code sent to a phone or email on file as security info.
More than a year ago, we began bringing two-step verification for certain critical activities, like editing credit cards and subscriptions at commerce.microsoft.com and xbox.com, or accessing files on another one of your computers through SkyDrive.com. For these scenarios, two-step verification is required 100 percent of the time for everyone, given the sensitive nature of these tasks.
With this release you can choose to protect your entire account with two-step verification, regardless of what service (or device) you are using with your Microsoft account. It's your choice whether you want to enable this, but for those of you that are looking for ways to add additional security to your account, we've worked hard to make set-up really easy.