SQL 2005 install hangs on "Setting File Security"
When doing an install of SQL 2005 you may encounter the
install hanging on the "setting file security" stage.
This is due to th install trying to do some security resolution with domain
controllers.
The easiest answer is to unplug the network cable (or disable the network
interface), however if you are doing a remote install that may not be
possible.
This KB discusses the issue http://support.microsoft.com/kb/910070/en-us and
does provide hotfix which can be applied to the install so you don't encounter
the problem.
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