Data Source Credential error upon using OAuth 2.0 to Refresh Exchage Server Online data

Hello,

I am trying to Schedule Refresh for my dashboard which gets data from Exchange Server Online. The settings I am using are:

Gateway Connection: Direct Query

Data Source Credentials: OAuth 2.0

I see the following error with respect to the Data Source Credentials:

Failed to update data source credentials.

You need to use SSL (HTTPS) when you use OAuth 2.0 authentication.How can I configure SSL (HTTPS)?

Thank you!