"A connection to MultiTerm Server unknown cloud not be established" error message appears while trying to open a termbase.

When trying to open a termbase you receive the: A connection to MultiTerm Server unknown cloud not be established error message. 



When trying to create a new termbase you receive the: Object reference not set to an instance of an object error message appears.

Open a Command Prompt by going into Start or Search, write CMD and click on Open. 
Enter the ipconfig /all command. If you have an IPv4 Address but you lack a Physical Address the issue is that the user has a VPN and SDL MultiTerm cannot function properly without a Physical Address.
In order to solve this issue you will have to disable the VPN connection and MultiTerm will work properly.



If the issue persists, check again the Command Prompt results for any network adapters without a Physical Address or for Unknown Adapters such as: 



To fix this, please go to the Network Connections settings or  type ncpa.cpl in the Windows search bar. Identify the faulty connection, right-click on it, and select Disable.




 

This issue is caused by a defect, CRQ-21297, and it manifests itself if you are using a VPN such as NordVPN ,  ExpressVPN or Avast SecureLine.
If you are using a VPN you will not have a physical address but MultiTerm needs a physical address for it to work properly.