A network problem occurred, an error occurred while establishing the connection, the administrator has ended (remote connection)

If you sign in, the following prompt appears:
Your Remote Desktop session has ended, possibly for one of the following reasons:
The administrator has ended the session.
An error occurred while establishing the connection.
A network problem has occurred.
Check the remote Desktop Help Session Manager service in System services to start.
1. "My Computer"--right--"manage"---> Services and Applications---> Services--->remote Desktop help Session Manager right-start.
2, to change the permissions of the registry; Find Hkey_local_machine\system\currentcontrolset\enum\root\rdpdr, right-click on RDPDR, select permissions, on everyone, Full control is selected.
3, copy the following, save as reg file, import the registry.
Windows Registry Editor Version 5.00
[hkey_local_machine\system\currentcontrolset\enum\root\rdpdr\0000]
"Classguid" = "{4d36e97d-e325-11ce-bfc1-08002be10318}"
"Class" = "System"
"HardwareID" =hex (7): 52,00,4f,00,4f,00,54,00,5c,00,52,00,44,00,50,00,44,00,52,\
00,00,00,00,00
"Driver" = "{4d36e97d-e325-11ce-bfc1-08002be10318}\\0021"
"MFG" = "(Standard system device)"
"Service" = "rdpdr"
"DeviceDesc" = "Terminal Server Device Redirector"
"ConfigFlags" =dword:00000000
"Capabilities" =dword:00000000