Right click on My Computer an select Manage. Expand Services and Applications and click on Services. Find MSSQLServerADHelper service, right click on it, select properties and change Startup type to 'Manual'. Clck Ok to close dialog. Try to do install again and see if it helps.

>On one computer I installed SQLEXPRESS with success. On the other, also under W2K Sp4, I got message like:
>"Setup failed because service MSSQL Server AD Helper is disabled for the current hardware profile ... ".
>I can't find where is the difference and what to do ?