1 files changed, 6 insertions, 0 deletions
diff --git a/Software/Visual_Studio/Tango.Integration/ExternalBridge/ExternalBridgeService.cs b/Software/Visual_Studio/Tango.Integration/ExternalBridge/ExternalBridgeService.cs
index c4f559c58..4cdd372f5 100644
--- a/Software/Visual_Studio/Tango.Integration/ExternalBridge/ExternalBridgeService.cs
+++ b/Software/Visual_Studio/Tango.Integration/ExternalBridge/ExternalBridgeService.cs
@@ -283,6 +283,12 @@ namespace Tango.Integration.ExternalBridge
                     {
                         if (IsInSession)
                         {
+                            if (container.Type == MessageType.ExternalBridgeLoginRequest)
+                            {
+                                SendErrorResponse(new AuthenticationException("Machine is already in session."), container.Token);
+                                return;
+                            }
+
                             if (_messageHandlers.ContainsKey(container.Type))
                             {
                                 try