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Article ID: 954371 - Last Review: November 3, 2009 - Revision: 1.0


After you upgrade a Windows Vista-based computer to Windows Vista Service Pack 1, you cannot use the Remote Desktop Web Connection client to connect to other computers in the same domain environment.


Important These steps may increase your security risk. These steps may also make the computer or the network more vulnerable to attack by malicious users or by malicious software such as viruses. We recommend the process that this article describes to enable programs to operate as they are designed to or to implement specific program capabilities. Before you make these changes, we recommend that you evaluate the risks that are associated with implementing this process in your particular environment. If you decide to implement this process, take any appropriate additional steps to help protect the system. We recommend that you use this process only if you really require this process.

To work around this issue, enable the Initialize and script ActiveX controls not marked as safe for scripting setting for the Local intranet zone.

To do this, follow these steps:
  1. Click Start, type inetcpl.cpl in the Start Search text box, and then press ENTER.
  2. Click the Security tab, click Local intranet, and then click Custom level.
  3. Find the Initialize and script ActiveX controls not marked as safe for scripting setting, and then click Enable.
  4. Click OK two times.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


For more information about the Remote Desktop Web Connection, visit the following Microsoft Web site: (

  • Windows Vista Service Pack 1, when used with:
    • Windows Vista Enterprise 64-bit Edition
    • Windows Vista Home Basic 64-bit Edition
    • Windows Vista Home Premium 64-bit Edition
    • Windows Vista Ultimate 64-bit Edition
    • Windows Vista Business 64-bit Edition
    • Windows Vista Business
    • Windows Vista Enterprise
    • Windows Vista Home Basic
    • Windows Vista Home Premium
    • Windows Vista Starter
    • Windows Vista Ultimate
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