Hybrid Calendar service single user error - Unauthorized' from O365.

[Shalid Kurunnan Chalil]

Hi All,

We have hybrid calendar services enabled on the Webex Control Hub. Everything was working fine until last week. one of the user's integration keeps getting failed with an error: Error: Received error 'Unauthorized' from O365. Admin action is required.

I checked the user permissions and assigned groups, but couldn't find any difference with other working users. 

The user gets the popup from the webex app as below;

Can anyone help me to troubleshoot it further?

Regards,

Shalid

[jrsteele21]

My money is that there is something special about that account on the Microsoft side of the house; maybe they are in a special group or something.

[Shalid Kurunnan Chalil · Accepted solution]

It got resolved by toggling the "Allow calendar service" for the affected user in the Control Hub under hybrid services. 

we got a couple of users with a similar issues and all the cases above solution worked for me. 

Regards,

[buttsm]

Is there a way to ensure this option is turned on by default for all new users added to Webex?