If you go to a browser and to the URL for your Service Layer you should hit the Healthcheck page:

For more information about what’s shown on here and addressing issues, click here
Rarely this page does not load. This could be for the following reasons:
- The Service Layer site in IIS is not setup as an application (please see installation instructions)
- HTTP Activation must be turned on. This is in Windows Server Manager…. https://support.hyland.com/r/OnBase/Application-Server/Foundation-23.1/Application-Server/Configuration/Server-Configuration/Application-Server-Configuration-for-Windows-Azure/Enabling-HTTP-Activation