A vast community of Microsoft Office365 users that are working together to support the product and others. Hotmail is now Outlook.com, and to sign in, you'll need your Microsoft account username and password. If you can't sign in to your Microsoft account, use our sign-in helper tool below to guide you to the correct solution. If we detect a problem with your account, we'll tell you what you need to do to solve the problem. If we don't detect any problem, we'll guide you through how you can ...