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Fix client computer issues after migrating from Windows SBS 2003 Premium to Windows SBS 2008

Updated: March 10, 2009

Applies To: Windows SBS 2008

note
This is an optional task.

When migrating to Windows SBS 2008 from Windows SBS 2003 Premium Edition with Microsoft Internet Security and Acceleration (ISA) Server installed, client computers on the network still have the Microsoft Firewall Client and Internet Explorer configured to use a proxy server. This causes connectivity issues on the client computers, because the proxy server no longer exists. If there is a different proxy server configured, the client computers continue to use the server running Windows SBS 2003 for the proxy server. To fix this issue, you must remove the Firewall Client on the client computers, and then reconfigure Internet Explorer either to not use a proxy server or to use the new proxy server.

To remove the Firewall Client in Windows XP Professional

  1. On the client computer, click Start, click Control Panel, and then click Add or Remove Programs.

  2. Click Microsoft Firewall Client, click Remove, and then click Yes.

  3. Close all windows.

To remove the Firewall Client in Windows Vista

  1. On the client computer, click Start, click Control Panel, and then click Uninstall a program.

  2. Click Microsoft Firewall Client, click Remove, and then click Yes.

  3. Close all windows.

To reconfigure Internet Explorer

  1. In Internet Explorer, click Tools, and then click Internet Options.

  2. Click the Connections tab, click LAN Settings, and then do one of the following:

    1. If you are not using a proxy server on your network, on the Local Area Network (LAN) Settings dialog box, clear all check boxes.

    2. If you want to use a new proxy server on your network, on the Local Area Network (LAN) Settings dialog box clear the check boxes in the Automatic configuration section, in the Proxy server section verify that both check boxes are selected, in the Address text box type the fully qualified domain name (FQDN) of the proxy server, and then in the Port text box type 80.

  3. Click OK twice.

  4. Browse to a Web site to ensure that the connection settings are correct.

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