The Virtual Server service does not start after you install Virtual Server 2005, and an error message reports that a dependency is marked for deletion

After you install Microsoft Virtual Server 2005 and then restart the host, the Virtual Server service (Vssrvc.exe) does not start. Additionally, an error message reports that a dependency is marked for deletion.

This problem occurs if one of the following conditions is true:

• The account under which the Virtual Server service runs has been changed. The Virtual Server service now runs under an account other than the Network Service account.
• The Network Service account has been given excessive permissions. For example, the Network Service account has been added to the Administrators group.
  
  Note When the Network Service account is added to the Administrators group, this defeats the purpose of limited-permission accounts such as Network Service and Local Service.
• The Network Service account has been granted the Load and unload device drivers permission in the Local Security Policy MMC snap-in.

To work around this problem, do not change the account under which the Virtual Server service runs.

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