- When you run the test-Organizationrelationship cmdlet from the Exchange Server 2010 server, you receive the following error message:The request failed with HTTP status 404: Not Found.
- If Outlook logging is enabled, the following error is logged when an on-premises user tries to view the free/busy information of a cloud user:An exception System.Net.WebException: The request failed with HTTP status 404: Not Found.
This is a known requirement for hybrid deployments. However, this is also a requirement if you set up a relationship between your Exchange Online organization in Office 365 and another organization.
Article ID: 2896834 - Last Review: Dec 28, 2016 - Revision: 1