Remote Assistance FAQ for Technical Users
Microsoft Support - Description of the Windows Messenger Reverse Connection Process Used by Remote Assistance
Microsoft Support - Supported connection scenarios for Remote Assistance
Remote assistance relies on full network connectivity between the expert user's computer and the novice user's computer over the following network ports:
If port filtering exists for any of these ports between the two computers, Remote Assistance will not work.
Bron:Microsoft Support - How to configure a computer to receive Remote Assistance offers in Windows Server 2003 and in Windows XP
Zie ook DCOM voor het vast instellen van de gebruikte poort boven de 1024.
Scenario: Via GPO onder andere Domain Admins rechten gegeven om machine (Terminal Server) over te nemen, maar bij poging tot Offer Remote Assistance verschijnt de melding: “Remote Assitance failed. Please try again.”. Het System Event log op de vragende PC maakt melding van het volgende:
Event Type: Error
Event Source: DCOM
Event Category: None
Event ID: 10006
Date: 3-7-2009
Time: 10:16:00
User: VM-XP\Administrator
Computer: VM-XP
Description:
DCOM got error "The service cannot be started, either because it is disabled or because it has no enabled devices associated with it. " from the computer TERMTEST when attempting to activate the server:
{833E4010-AFF7-4AC3-AAC2-9F24C1457BCE}
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Oplossing: Controleer of de Help and Support service draait. Zo niet, zorg dan dat deze gaat draaien.