You cannot login to ControlUp Real Time Console in an On-Premises mode environment.
The message you receive is - "Authorization Failed"
It appeared that the password for the two service accounts that needed to run the ControlUp services were expired. So, AD was not letting them to run the services.
You can verify if this is indeed the case, if you try to restart the ControlUp services and they do not start back -
To receive more details about the failure, you can look at the login log which is located on the On-Premises server in C:\Program Files\Smart-X\ControlUp Server\Websites\UserManagementService\4.1_WS\user management.log
If the following errors appears -
ERROR|Error in BaseResponse. |UserManagement.Exceptions.UserManagementException: Failed to bind to organization permissions group 'AD Group Name'
It means the issue is with the group, the AD group you assigned as the group for users who can login to ControlUp Console.
The group needs to be a Security Global group.
And then group and SID needs to match in the server settings file, located here - "C:\Program Files\Smart-X\ControlUp Server\Server Settings\ControlUpServerSettings.xml"
How do I get the SID? click here for additional information.