Problem Performing free/busy requests to Google failed with the error ‘Google.Apis.Requests.RequestError Invalid Credentials  Errors [ Message[Invalid Credentials] Location[Authorization - header] Reason[authError] Domain[global] ] ‘. Cause The login filled in the field Free/busy User Login is not valid Resolution Check if your user have: A valid account (no issue with password expired, or inactive account) […]
This KB article will help you to troubleshoot your configuration for the free/busy component of Cloudiway’s enterprise coexistence service.
Cloudiway Coexistence Server enables seamless collaboration between Google Apps, Office 365 and Exchange users. It provides interoperability between these mail platforms during your migration or for long-term coexistence.
What is coexistence?