This article is intended to help you setup your Office 365 mailbox on Outlook 2010 email client.
Add an email account when you first run Outlook 2010
Open Outlook and when prompted to configure an email account, click Next.
2. To add an email account, click Yes, and then click Next.
3. Enter your name, email address, and password, and then click Next.
A progress indicator appears as your account is configured. The setup process can take several minutes.
After the account is successfully added, you can add more accounts by clicking Add another account.
Add an Office 365 mailbox in Outlook 2010
Although most people add an email account when Outlook first runs, your first or additional email accounts can be added at any time
Click the File tab.
Under Account Information, click Add Account.
Follow Step 3 listed above to complete the setup.