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gonzal13Flag for United States of America

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Remote Assistance connection could not be established

https://www.experts-exchange.com/questions/21833723/Remote-assistance.html

I have xp pro sp1.
I am able to have someone else provide Remote Assistance to me. I cannot provide Remote assistance to a client.
I also have Vonage with two units, daisy chained.

I get the following message
Remote Assistance connection could not be established because the remote host name could not be resolved. Please try again.

Essentially it just means that remote assistance didn't get a response from the target computer. The most likely cause in home scenarios is that there's a router in the way at the remote site. For Remote assistance to work, port 3389 must be forwarded on that router

port 3389 is open

RcBuddy.MSRcincident
<?xml version="1.0" encoding="Unicode" ?><UPLOADINFO TYPE="Escalated"><UPLOADDATA USERNAME="jp"
RCTICKET="65538,1,192.168.16.101:3389;TIGERTECH:3389,*,ER5de6cvlvblNKs1+APInc4VA41OF18QV46y1Sc/0XI=,*,*,
AnO+6MGb2FrxHHYQFr1hLBOS6V8=" RCTICKETENCRYPTED="0" DtStart="1143506631" DtLength="30" PassStub="" L="0" /></UPLOADINFO>
Microsoft Server OSNetworking

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Rob Williams
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Rob Williams
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gonzal13, did the above explain satisfactorily what was needed to get Remote Desktop to function?
--Rob
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Rob Williams
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Keith, is it reasonable to propose that my answer was appropriate for the question, regardless of the fact there was no confirmation? It was quite specific as to the problem with the Remote Assistance Ticket not having a public IP (192.168.16.101).
Thanks,
--Rob
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Keith Alabaster
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Hey Rob, lets see if we get a response first. If not I'm happy for the Admin to amend the recommendation. I recall having to forward a port although it has been a LONG time since i ussed remote assistance for a client.

Regards
Keith
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Rob Williams
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>>"I recall having to forward a port although"
Hi Keith, no question you would have to port forward if it is a non-UPnP router. The concept with Remote assistance was that a novice could request assistance easily. That novice (my mother-in-law...just kidding) would never be able to configure port forwarding. Therefore it uses UPnP to manage the routing automatically for you. However, the hole in this theory is that most current routers, SOHO units, that  support UPnP, have it switched off for security purposes, thanks to Steve Gibson (www.grc.com)
In the above case it seems to have worked but it looks like the router was behind a NAT device, probably a combined modem/router, and received a private IP rather than the public IP (192.168.16.101:3389) there for the receiver could not connect from the remote/support site.

From MS site: " Yes, Remote Assistance will connect through NAT devices unless both the requestor and the helper are behind a Non-UPnP NAT device.......... Remote Assistance will detect the public Internet IP address and TCP port number on the UPnP NAT device and insert the address into the Remote Assistance ticket. The public Internet address and TCP port number will be used to connect through the NAT device by the helper or requestor workstation to establish a Remote Assistance session. The Remote Assistance connection request will then be forwarded to the client by the NAT device."
There is also a sample chart of the conditions in which it will work.
http://www.microsoft.com/windowsxp/using/helpandsupport/rafaq-technical.mspx
also:
http://ericappel.net/blog/MicrosoftRemoteAssistance.aspx

Not meaning to argue in anyway, and please don't worry about the points, it was just a suggestion, but thought I would try to clarify for those reading later.
Thanks,
--Rob
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gonzal13
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Hi:

The question was not abandoned. It just went on the back burner because I was working on websites.

Joe
Thanks for the follow up Joe.

Keith
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Rob Williams
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Thanks Joe,
--Rob
Networking
Networking

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

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