======Links======
[[http://www.microsoft.com/windowsxp/using/helpandsupport/rafaq-technical.mspx|Remote Assistance FAQ for Technical Users]] \\
[[http://support.microsoft.com/kb/Q306298/en-us|Microsoft Support - Description of the Windows Messenger Reverse Connection Process Used by Remote Assistance]] \\
[[http://support.microsoft.com/kb/Q301529/en-us|Microsoft Support - Supported connection scenarios for Remote Assistance]] \\

[[http://www.minasi.com/forum/topic.asp?TOPIC_ID=28789|Mark Minasi's Reader Forum - IPSec and Remote Assistance]] \\

=====Remote Assistance en firewalling=====
Remote assistance relies on full network connectivity between the expert user's computer and the novice user's computer over the following network ports: 
  * TCP port 135
  * TCP port 3389
  * All TCP ports that are greater than 1024
If port filtering exists for any of these ports between the two computers, Remote Assistance will not work. \\
Bron:[[http://support.microsoft.com/kb/301527/en-us|Microsoft Support - How to configure a computer to receive Remote Assistance offers in Windows Server 2003 and in Windows XP]] \\
Zie ook [[microsoft:dcom|DCOM]] voor het vast instellen van de gebruikte poort boven de 1024. \\

=====Remote Assistance failed=====
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:
<code>
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.
</code>
Oplossing: Controleer of de Help and Support service draait. Zo niet, zorg dan dat deze gaat draaien.