If you are still encountering errors connecting to Remote Desktop Gateway:

Create a  Registry key to change how Remote Desktop connects to Remote Desktop Gateway:
*Please note that you may need Administrator privileges to edit the registry.

Please download and install the following Registry key:

RDGClientTransport.reg

Or refer to the following instructions to add the registry key manually

• Click Start-search or type - regedit The registry editor will display
• Navigate to:
  • HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client
• Right click
  • Select New
  • Select DWORD (32-bit) Value
  • Name this RDGClientTransport 
• Right click this new key (RDGClientTransport)
  • select Modify
  • Add "1" to the Value Data field.
  • The registry key has been successfully created.

Please attempt to login and contact Support if you continue to have issues.