Cannot connect to a virtual machine or to the Administration Web site by specifying "localhost" in Virtual Server 2005 (867649)

SYMPTOMS

After you configure the Microsoft Virtual Server 2005 Virtual Machine Remote Control (VRMC) Client program to use the IP address of a loopback adapter that has been added to the host computer, you may experience one or both of the following symptoms:

If you try to connect to a virtual machine by using the VRMC Client program, you receive the following error message:
No connection
If you try to connect to the Virtual Server Administration Web site, you receive an error message that is similar to the following:
The page cannot be found

The page you are looking for might have been removed, had its name changed, or is temporarily unavailable

HTTP 400 - Bad Request
Internet Explorer

CAUSE

This issue occurs if you specify the path of "localhost" in the virtual machine URL or in the Virtual Server Administration Web site URL. For example, this issue occurs if you specify a URL that is similar to the following to connect to a virtual machine:

localhost:5900/virtualmachine1

RESOLUTION

To resolve this issue, specify the IP address that is assigned to the loopback adapter when you type the URL to the virtual machine in the VRMC Client program or when you type the URL to the Virtual Server Administration Web site. For example, to connect to a virtual machine, type a URL that is similar to the following in the Connect to server dialog box of the VRMC Client program:

192.168.0.100:5900/virtualmachine1

WORKAROUND

To work around this issue, configure the VMRC Server program to use the (All unassigned) IP address option. To do this, follow these steps:

Click Start, point to All Programs, point to Microsoft Virtual Server, and then click Virtual Server Administration Website.
Type your credentials in the Connect to Servername dialog box, and then click OK.
Under Virtual Server, click Server Properties.
Click Virtual Machine Remote Control (VMRC) Server.
In the TCP/IP address list, click (All unassigned), and then click OK.