Consider the following scenario:

  • You have a computer that is running Windows Vista or Windows Server 2008.
  • You specify a user name that is exactly 15-bytes. This user name includes double-byte characters during the Out-of-Box Experience (OOBE) process. For example, you specify “?????12345” as a user name.
  • You use the default computer name when you proceed to the next step of the OOBE process. For example, you use “?????12345-PC” as the computer name.

In this scenario, the specified user account defaults to a standard user after the OOBE process is completed. Therefore, the user cannot execute some operations that require administrator permission.

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