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Why does my Microsoft Virtual Server 2005 Administration Web site make me authenticate even though I'm logged on the local network as a user with permissions?

A. This is a problem with the Web browser configuration. Your Virtual Server administration Web site URL has the format http://.:1024/VirtualServer/VSWebApp.exe (e.g., ). Because this URL has a Fully Qualified Domain Name (FQDN), Microsoft Internet Explorer (IE) processes it as an Internet rather than an intranet site, which means auto-authentication is disabled. (If you typed in just the server name, not the FQDN--e.g., savdalvs01>:1024/VirtualServer--then you would not be prompted to authenticate.)

To resolve the problem, add the URL of the virtual server to IE's "Local intranet" zone, by following these steps:

  1. From the Tools menu, select Options.
  2. Click the Security tab.
  3. Select "Local intranet" and click Sites.
  4. Click Advanced.
  5. In the "Add this Web site to the zone" field, type the name of the virtual server Web site and click Add, as the figure shows. Click OK to all dialog boxes.

Auto-authenticate should now function. Under the Security tab of the IE Options, you can also click Custom Level and ensure that the User Authentication - Logon option is set to "Automatic logon only in Intranet zone," as the figureshows.

If you're still prompted to authenticate, ensure integrated authentication is enabled for the virtual server Web site. To do so, open the Microsoft Management Console (MMC) Internet Information Server (IIS) Manager snap-in, right-click the Virtual Server Web site, select Properties, Directory Security. Under "Authentication and access control," click Edit and ensure that "Integrated Windows authentication" is enabled, as the figureshows.

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