Sign in to Outlook Web App
Learn how to sign in to and use Outlook Web App to access your email messages, contacts, and calendar.
You can use Outlook Web App to access the email, contacts, and calendar in your Office 365 for business or other Microsoft Exchange-based email via a web browser. The web address you’ll use to sign in to Outlook Web App depends on the type of account you have. For example, if you’re using Office 365 for business, go to the Office 365 sign-in page.
If you have questions about signing in to Outlook Web App, see Frequently asked questions in this article.
How do I to sign in to Outlook Web App?
Open your web browser or, if it's already open, open a new window.
Go to the sign-in page that matches the type of account you have.
Office 365 for business (Office 365 Small Business, Office 365 Midsize Business, Office 365 Enterprise, Office 365 Business Essentials, Office 365 Business Premium)
Go to the Office 365 sign-in page.
Office 365 operated by 21Vianet
Go to the Office 365 operated by 21vianet page.
Corporate Exchange-based email that does not use Office 365
On-premises (Microsoft Exchange Server)
Go to the web address provided by the person who manages your email account. For example, a company named Contoso might use an address such as https://mail.contoso.com.
Enter the full email address (for example, firstname.lastname@example.org) for your Office 365 for business, Office 365 Education, or other Exchange-based email. Contact the person who manages your email account if you don't know your email address and password.
Enter your password.
Click Sign in.
If you're using Office 365 for business, sign in and then select Outlook, People, or Calendar on the nav bar. Or choose App launcher > Outlook, People, or Calendar.
If you're using corporate email, select Mail, People, or Calendar on the nav bar.
Frequently asked questions
What's the difference between Outlook.com and Outlook Web App?
Outlook Web App is the web browser version of Microsoft Outlook that is used by businesses and organizations. Outlook Web App can only be used to access Office 365 for business and other accounts that are hosted on a server that's running Microsoft Exchange Server 2013.
Outlook.com (formerly Hotmail.com) is a modern email service that provides free email for personal use. Outlook.com email addresses include @outlook.com, @hotmail.com, @msn.com, and @live.com. You can’t sign in to an Outlook.com account by using Outlook Web App. For information about how to access your existing Outlook.com account or how to sign up for a new Outlook.com account, go to Outlook.com.
What browsers can I use with Outlook Web App?
You can use most popular web browsers to access your mailbox. For more information about browser support, see Supported browsers for Outlook Web App.
How do I use Outlook Web App?
How else can I connect to my Office 365 for business or other Exchange-based email?
Outlook Web App is a great way to access your Office 365 for business or other Exchange-based email by using a web browser. For information about how you can connect to your account by using a mobile device (for example, iPhone or Android device), a desktop version of Outlook (for example, Outlook 2013 or Outlook 2010), or another email program (for example, Mac Mail or Mozilla Thunderbird), see Email program setup reference.
What if I am using Office 365 Home Premium?
If you're using Office 365 Home Premium, you can’t access your email by using Outlook Web App. Office 365 Home Premium doesn't include an email service.
What do I need to know if I am using the light version of Outlook Web App?
For information about the version, see Outlook Web App Light.
How do I sign out of Outlook Web App if I'm using Office 365?
To sign out of Office 365, including Outlook Web App, select your picture on the nav bar, and then click Sign out.
How do I sign out of Outlook Web App if I'm not using Office 365?
To sign out of Outlook Web App, select your picture on the nav bar, and then click Sign out.
How do I reset my password?
If you're using Office 365, see Change your password.
If you're not using Office 365, see Change password in Outlook Web App.
What if I need help signing in?
If you need help signing in, contact the person who set up the work or school account you use with Office 365 for business or Office 365 Education. You can also visit Support community: Office 365 for business.
If your business uses Exchange-based email and is not using Office 365, contact the person that manages email for your business.
My email address ends in @outlook.com, @hotmail.com, or @msn.com. Why can't I sign in to Outlook Web App?
You need to be using the paid email service available to Office 365 for business subscribers or be using an Exchange-based email account to use Outlook Web App. If your email address ends in @outlook.com, @hotmail.com, @msn.com, or @live.com, you need to sign in to your account at the Outlook.com webpage.
I can sign in to the Office 365 webpage, but I can't access Outlook Web App. Why can't I see the Outlook option on my Office 365 webpage?
It's possible that the person who set up your Office 365 for business or Office 365 Education account has set up an account for you but hasn't yet assigned you an Exchange Online license that is needed to use email services. You can check with your admin to see if you have an Exchange Online license with your account.