Sign up for Office 365


Before you sign up for Microsoft Office 365 for enterprises, make sure that your computer has one of the combinations of operating system and Internet browser listed in Software requirements for Office 365. To learn whether Office 365 and all the services in Office 365 are available in the country or region where you do business, see License restrictions for Office 365.

As the administrator for your organization, you sign up for yourself and your organization. You can sign up for a free trial or purchase a subscription. After you have created your organization’s account, use the administrative tools in Office 365 to create user accounts, and then assign them to each user in your organization. During the sign-up process, you are asked to set a new domain name and create a user ID for your account.

What do you want to do?

  • Sign up for Office 365

  • Opt out of future Office 365 mailings

Sign up for Office 365

During the sign-up process for the free trial or to purchase Office 365, you provide information about your organization. You also create a user name and a new domain name that together become the user ID for your account. Use your user ID each time you sign in to Office 365. For more information, see What is my user ID and why do I need it?

To sign up for Office 365, follow these steps.

  1. On the Office 365 portal, click Buy now or Free 30-day trial.

  2. On the Sign up page, select the country or region where your organization will use Office 365, and then select the language that you want to use for business communications.


    • The billing currency and local tax rates vary, depending on the country or region that you select.

    • Be sure to select the right country or region. Your account will be assigned to the data center that is closest to your location. You can’t change the country or region after you sign up.

  3. Type your first and last names and your organization name. Your first and last name will be displayed on the Office 365 portal after you sign in.

  4. Type the complete mailing address of your organization.

  5. Type an existing email address.


    The email address that you provide is where you will receive password reset information if you forget your Office 365 password and request a reset. Service, billing, and promotional information that you choose to receive will also be sent to this email address.

  6. Type a descriptive name for your new domain so that it is in the following format: Click Check availability to ensure that the domain name is available.


    After you create your account, you can keep the domain name that you created during sign-up or change it to your organization’s custom domain name. To use your organization’s custom domain name, you first need to add it to Office 365. For information about adding your domain name, see Add your domain to Office 365.

  7. Type a user name, and then type a password. Retype the password to confirm it.


    For password guidelines, see OBSOLETE Change your password.

  8. Type the numbers and letters that you see in the picture box. The characters are not case-sensitive. This step confirms that a person—not an automated program—is signing up for an account. If you cannot clearly read the characters in the picture box, do one of the following:

    • To see a new picture box, click the Refresh button next to the picture box.

    • To hear an audio recording of the characters, click the Speaker button. The recording will be for a different set of characters from those that appear in the picture box. If after hearing the recording you decide that it would be easier to type the characters in the picture box, click Refresh to see a new picture box. Type the numbers and letters that appear in the new picture box.

  9. Type a mobile phone number that can receive text messages, and then click Send text message. A verification code is sent to your mobile phone.

  10. Type the verification code from the text message.

  11. Review the service agreement, and if you agree, click I accept and continue to complete the sign-up process.

After you sign up, you are automatically signed in to Office 365 as an administrator. An email message that contains your account information is sent to the email address that you provided during the sign-up process. Keep this email message to refer to if you forget your user ID or the website address where you sign in to Office 365.

Opt out of future Office 365 mailings

If you don’t want any Office 365 promotional information to be sent to your alternate email address, you can click the Unsubscribe link in any email message that is sent from Office 365. It can take up to 10 days for the change to take effect.

See Also

Sign in to Office 365
Create or edit users
Change your contact preferences