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February 27, 2001
When you attempt an unattended upgrade of Windows NT 4.0 to Windows 2000, you receive:
The specified Setup script file (unattend.txt) is inaccessible or invalid.Contact your system administrator.
NOTE: This error occurs with winnt32 /unattend:unattend.txt.
You are missing the UnattendMode=FullUnattended parameter in the unattend.txt file:
[Unattended] NTUpgrade=Yes UnattendMode=FullUnattended [UserData] ProductID="xxxxx-xxxxx-xxxxx-xxxxx-xxxxx"
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