The detailed error message is as below:
Your computer can’t connect to the remote computer because an error occurred on the remote computer that you want to connect to. Contact your network administrator for assistance.
Follow the below solution steps to resolve RemoteApp Disconnected because error occurred on the remote computer.
Open Registry Editor to create or edit a 32 bit DWORD value registry key called RDGClientTransport:
HKCU > SOFTWARE > Microsoft > Terminal Services Client
Set the value to 1.