When trying to connect to a GroupShare/Trados Live/Language Cloud server, you are not able to move past the initial Server Connection in the Add SDL Server wizard, and Studio throws an error when trying to connect to the server:


Failed to connect to the server. Please check your server connection settings, network and internet connections, and that the server is available.



Checking the Studio logs reveals the following:
 

FATAL [2020-05-20 10:05:39,688] Sdl.Desktop.Platform.UnhandledException - There was a communications or connection error.
Please check your server connection settings, network and internet connections, and that the server is available.
System.ServiceModel.Security.SecurityNegotiationException: Could not establish secure channel for SSL/TLS with authority 'YOURSERVERNAME.com'. ---> System.Net.WebException: 
The request was aborted: Could not create SSL/TLS secure channel.
  
 at System.Net.HttpWebRequest.GetResponse()
   at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
   --- End of inner exception stack trace ---

Server stack trace: 
   at System.ServiceModel.Channels.HttpChannelUtilities.ProcessGetResponseWebException(WebException webException, HttpWebRequest request, HttpAbortReason abortReason)
   at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
   at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
   at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at Sdl.Enterprise2.Platform.Contracts.Discovery.IDiscoveryService.GetServiceEndpoints()
   at Sdl.Enterprise2.Studio.Platform.Client.Discovery.DiscoveryServiceClient.GetServiceEndpoints()
   at Sdl.Enterprise2.Studio.Platform.Client.IdentityModel.UserManagerClientFactory.GetUserManagerVersion(String baseAddress)
   at Sdl.Enterprise2.Studio.Platform.Client.IdentityModel.UserManagerClientFactory.Create(String baseAddress)
   at Sdl.Desktop.Platform.ServerConnectionPlugin.Implementation.ServersDialog.ServerConnectionWorker.Connect()
INFO [2020-05-20 10:05:39,690] Sdl.Desktop.Platform.UnhandledException - There was a communications or connection error.

 

You are trying to connect to a server where the SSL Certificate allows connections from TLS 1.2 only for extra added security. 
You are using a computer with TLS 1.2 disabled, for example, a machine running Windows 7, an Operating System with TLS 1.2 disabled by default.

• The easy fix for this issue is to Download the registry fix wizard from here.
• For an in-depth explanation and solution, please see the article on how to Enable TLS 1.2 on your system.