Steps to follow to Exchange Configuration in office 365

1. Open the Control Panel > Click Mail.
2. *Note: If you do not see the Mail option, change your View by setting to Large Icons or Small Icons.
   
   
    
3.  After open mail icon then click Email Accounts...

4. Click New...

5. Select Manual setup or additional server types, then click Next.

6. Select Microsoft Exchange Server or compatible service, then click Next.

7. Enter the following in the corresponding fields:

            Server: outlook.office365.com
            User Name: CULoginName

8. When finished, click More Settings ...
    

9. Click the Security tab.

    Adjust the following settings:

10. Uncheck Encrypt data between Microsoft Outlook and Microsoft Exchange.

11. Choose Anonymous Authentication from the Logon network security drop-down menu.

12. In the Connection tab, check Connect to Microsoft Exchange using HTTP, then click Exchange Proxy Settings...
    
    
     
13. In the Use this URL to connect to my proxy server for Exchange field, enter outlook.office365.com.
    
    
     
14. Check the Only connect to proxy servers that have this principal name on their certificate, then enter msstd:outlook.com in the associated text field. 
    
    

         Adjust the following settings:

15. Check the On fast networks, connect using HTTP first then connect using TCP/IP box.
16. Select Basic Authentication from the Use this authentication when connecting to my proxy server for Exchange drop-down menu. > OK
    
    
     
17. Click OK.

18. Click Check Name.

19. An authentication prompt will appear. Enter your [email protected] and IdentiKey password in the corresponding fields, then click OK.
    
    
     
20. Click Next >.

21. Click Finish. Your account will be setup and you can open Outlook to begin using your Exchange account.