Keespostma: I'm experiencing the exact same thing. And when I look at the log, there is nothing logged. I'm going to turn off the McAfee firewall until we get an answer to this.
Some more info:
I'm running McAfee Antivirus Plus.
Personal Firewall is version 13.1 (Build 13.1.127), last update 15-01-2013
OS is Window 7 64-bit
RDP has been allowed with the Ports and System Services section.
Security History in McAfee reports:
Suspicious incoming network connection blocked.
Source IP address: xxx.xxx.xxx.xxx
The PC xxx.xxx.xxx.xxx tried to access your system port TCP port 3389. If you want to allow this traffic, either trust the IP address or open the port in the System Services in Firewall.
Tried disabling RDP en re-enabling it, did not work...
Does someone have a solution??
Found a workaround:
In McAfee, go to Firewall and then to the Ports and System Services section. Click on Add, fill in all fields (except for Local UDP Ports), Local TCP/IP Ports is 3389, Open ports to should be "All PCs".