If you use any Microsoft services (Word, Outlook, etc.), you have a Microsoft account. You manage your Microsoft account from the Microsoft account dashboard.
Tip: If you don't have an account yet, you can create one during the sign-in process. See How to create a new Microsoft account.
Sign in to your Microsoft account dashboard
Go to Microsoft account and select Sign in.
Type the email, phone number, or Skype sign-in that you use for other services (Outlook, Excel, etc.), then select Next. If you don't have a Microsoft account, you can select No account? Create one!. Note that we recommend using an email you already have and use regularly.
Type your password and select the Keep me signed in box if you want to go straight into your account next time (not recommended for shared computers).
Select Sign in.