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Configure alternate login and Office 365 resource URLs

If your organization uses alternate login and Office 365 resource URLs, you must configure the alternate URLs in the app configuration for each required app. For example, the U.S. Government uses alternate login and Office 365 resource URLs. The default URLs are as follows: 
  • Login URL: login.microsoftonline.com
  • Office 365 resource URL: outlook.office365.com
The U.S. Government uses the following URLs:
  • Login URL: login.microsoftonline.us
  • Office 365 resource URL: outlook.office365.us
For more information about configuring alternate login and Office 365 resource URLs, visit authentication-national-cloud.
In addition to configuring the alternate login and Office 365 resource URLs, you must also ensure that your routing and connectivity profiles are configured appropriately and can access the alternate URLs.
Perform these steps on the app configuration of each required app.
  1. In the 
    Office 365 Sign On URL
     field, type the login URL for your organization.
  2. In the 
    Office 365 Resource
     field, type the Office 365 resource URL for your organization.
  3. In the 
    Exchange ActiveSync Settings
     area, in the 
    ActiveSync Server
    field, type the Office 365 resource URL for your organization. 
  4. Save the app configuration.