terminal service in SBS 2011 RWW does not work from external PCs

I just finished a migration from SBS 2003 to SBS 2011.
I can get to OWA, no problems,
When i try to connect to a computer I get
"an error occurred while sending data tot he remote desktop gateway server. the server is temporarily unavailable or the network is down"
That does not happen internally, where I can RDP into nay machine without problems
I can also access the shared folders on the SBS server
Just cannot RDP into any PC or server.
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Miguel Angel Perez MuñozCommented:
Try updating your RDP client: http://support.microsoft.com/kb/969084

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Cris HannaSr IT Support EngineerCommented:
Did you run the "setup your internet address wizard" on the SBS Console?
JPD153Author Commented:
Yes, and actually it works with Windows 7 remote clients, so I will isntall the patch for the XP box and see if it works
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JPD153Author Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for JPD153's comment #a39555681

for the following reason:

I did install the XP fix and it worked
Cris HannaSr IT Support EngineerCommented:
I don't understand why you are not awarding points to the Drashiel since he pointed to you to the solution and you said it fixed the issue?
JPD153Author Commented:
My mistake
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