The Offer Remote Assistance feature may not work if you do not open DCOM Port 135 in the client firewall of a Windows Vista-based computer

Because of security concerns, you may be unwilling to open DCOM Port 135 in the client firewall of a Windows Vista-based computer. In this situation, the Offer Remote Assistance feature may not work as expected.

If you are unwilling to open DCOM Port 135, use the Authenticated IPsec Bypass feature to enable the Offer Remote Assistance feature.

For more information about the Authenticated IPsec Bypass feature, visit the following Microsoft Web site:

In a corporate environment, help-desk agents use the Offer Remote Assistance feature to provide desktop support to employees. This feature lets help-desk agents both view employees' desktops and share control of employees' desktops. Typically, companies enable the Offer Remote Assistance feature by opening DCOM Port 135 in the client firewall of their employees' computers.