If you see the following error when you try to connect a Windows workstation for file transfer:

External Turn servers could not be obtained. Contact your administrator

To fix this error, perform the following checks:

• Validate that the configuration or tenant database has the settings turnserverextern correctly completed.

select sett_value from AFW_SETTINGS where sett_key = 'turnserverextern';

• If it does not exist, insert the key in the respective table, taking into account that the information stored in the tenant’s database predominates.
• If the information already exists, validate that it is correct.
• In the case of On-Premise deployments, validate that the External Turn Servers have been configured correctly. View Turn Local Server Configuration and that the service Aranda Turn Stun if it is running.