[ActiveDir] OT: Issue with remote assistance offers

[Mike Guest]

Anyone seen this before?   I have an xp box sitting behind an internal firewall (long story) that I want to be able to offer unsolicited remote assistance to.  I can already RDP to the box, but the session on that box I want to offer assistance to is already an RDP session, so that solution’s out.   I have opened TCP135 and 3389. I can create an offer on the remote system (as a file), move it to my machine and successfully initiate an RA session.   However, when I try to initiate an RA session without an invite, the help and support center window freezes for about 30 seconds then tells me “The remote machine does not exist or is unavailable” – I’ve tried both by name and by IP   I’ve double-checked with a port scanner and 135 is definitely open (as is 3389, but I couldn’t do the invited RA or RDP without that)   Anybody?   Thanks   ********************************************************************* This email is intended only for the addressee named above. As this email may contain confidential or privileged information, if you are not the named addressee or receive this message in error, please notify us immediately, delete it and do not make use of or copy it. This message is protected by copyright. HML accepts no responsibility for viruses found in this message or any file attachment. Homeloan Management Limited Registered in England No. 2214839 1 Providence Place, Skipton, North Yorkshire BD23 2HL **********************************************************************