If you're signing in with an Outlook, Hotmail, Live, or MSN email account:
Go to the Outlook.com sign-in page.
Enter your email address or phone number.
On the next page, select Sign in.
If you're signing in to your work or school account in Office 365:
Go to the Office 365 sign-in page.
Enter the email address and password for your account.
Select Sign in.
Note: To sign in to Office 365 using another account, select Use another account the next time you sign in.
If you're signing in to Office 365 operated by 21Vianet (in China):
Problems signing in or out?
To sign out of Outlook.com or Outlook on the web:
Select your account picture at the top of the screen.
Select Sign out.
To prevent Outlook from signing you in to your work or school account automatically, clear the Keep me signed in check box the next time you sign in to Office 365.
Need more help?
For help with Outlook.com:
To contact support, go to Outlook.com and select > Help.
For help with Office 365 and Outlook on the web:
If you're using Office 365 operated by 21Vianet in China, see Contact Office 365 for business support - Admin Help.