Please follow the below steps to update the BaseURL:
1. Open the server where Prolaborate is installed.
2. Go to C:\Program Files (x86)\Prolaborate\ProlaborateServiceManagement.
3. Open Prolaborate Service Management.exe
4. Click on Manage Configuration
5. Update BaseURL. It should be the URL you use to visit Prolaborate.
6. Click on Save
7. Restart Prolaborate Service from Task Manager