Open the Local Group Policy Editor on the machine you are running the Remote Desktop client.
Under Computer Configuration>Administrative Templates>Windows Components>Remote Desktop Services?Remote Desktop Connection Client
Enable the setting called Turn Off UDP On Client
Now I'm able to connect without issue... somehow UDP isn't making it through and this change fixes the problem!
Should anyone wish to change the setting from registry rather than through group policy, here's the place to do that:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client
Create\set fClientDisableUDP
(REG_DWORD) to 1
.
PS> Set-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client' -Name fClientDisableUDP -Value 1
Have you fully patched both computers including option updates? (RDP version 8.0 has come out several weeks ago on Windows 7 and maybe also on 8). – harrymc – 2013-01-10T15:06:56.437
In addition to @harrymc's suggestion, take a look at the source Win8 RDP settings. Also, are the source (Win7 and Win8) hosts on the same LAN as the target Win8, and the NIC and Comms port speeds verified OK? Lastly, try different NIC ports for the source hosts on your switch. – Lizz – 2013-01-11T06:35:16.833
Does changing the Windows 8 theme have any effect? On the Experience tab for Remote Desktop Connection, what happens if you connect choosing Modem (28.8 Kbps) and deselect Bitmap Caching? – user314104 – 2013-07-30T01:13:04.697