You may need to modify the invitation. this link may help,
remote desktop How to fix the error "Remote Assistance connection could not be established because the remote host name could not be resolved"? ....
www.chicagotech.net/rdesktop.htm
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"graham" <(E-Mail Removed)> wrote in message news:F4F2BCD0-2443-4D58-A774-(E-Mail Removed)...
I amgetting the message 'REMOTE ASSISTANCE CONNECTION COULD NOT BE
ESTABLISHED BECAUSE THE REMOTE HOST NAME COULD NOT BE RESOLVED. PLEASE TRY
AGAIN.' The RA invite was sent using thehelp & support wizard.
Any clues or advice?