I can't connect to PC (Windows 7) from Mac (OSX 10.6.8) using Remote Desktop Connection for Mac (v. 2.1.1)

My issue is with RDC 2.1.1 for Mac: I am able to connect to my PC (Windows 7) with VPN and RDP on my iPhone with no problem.
I can't connect from MacBook Pro (OSX 10.6.8) using RDC 2.1.1.  I am able to successfully login to VPN.  When I attempt to connect to my computer using RDC (I use my IP address), I get an error message:  "Mac cannot connect to Windows based computer."
My PC remote desktop settings are correct and an exception has been added for remote desktop. My PC is not sleeping, off, or on standby.  Connection is possible because I can get in through my iPhone.
I have searched everywhere and have done most of what I've found in forums and help menus.
Please help.
 

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Last updated November 26, 2018 Views 2,461 Applies to:
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I have not tried RDC over local LAN - which I take to mean bringing my Mac laptop to work and connecting directly to the network with a cord and attempt to connect to my work PC with RDC through that connection.  Please let me know if my understanding is correct.

 

I believe I successfully opened TCP port 3389 on my router, but not 100% sure.  My router required that I enter both a Public and Private Port, so I entered 3389 in both.  Was that correct?  It had fields for UDP.  I didn't enter anything in those fields.
 
After I presumably opened the port, I attempted to connect to VPN and then RDC and then disconnected VPN and tried to just connect to my PC through RDC.  Neither way worked.
Are there any other settings I might need to change?
 
Thank you so much for responding.  I have posted on so many forums and no answers.


Yes, a good basic test is to bring the laptop to work and try direct over the LAN.

http://theillustratednetwork.mvps.org/RemoteDesktop/TroubleshootingDiagrams/Basic.html

If you can connect then its an issue with the VPN tunnel or the router if your trying to connect from the public internet using TCP Port 3389 and not the VPN tunnel. What type of VPN are you using? Can you ping the RDC host when connected through the VPN tunnel to your work LAN?

As far as router port forwarding is concerned make sure the RDC host has a static LAN IP. See this page for help with port forwarding with whatever router you have. Disregard references to UDP Port 3389.

http://portforward.com/english/applications/port_forwarding/Remote_Desktop/Remote_Desktopindex.htm

More help...

http://mac2.microsoft.com/help/office/14/en-us/rdc/category/8ccf8a64-7139-44f5-9e77-50f2ea3ff971

http://mac2.microsoft.com/help/office/14/en-us/rdc/item/a776418a-8908-4345-9420-df141247602c

MS-MVP Windows Expert - Consumer
"When all else fails read the instructions"

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