WSUS install fails on 2008 R2 64bit

I'm trying to install WSUS on a Windows 2008 R2 standard 64bit.  I used the link below which worked perfectly on another of my servers.
The install package is here: 
I added the Web server roles before running the WSUS install (attachment)   iiserrorThe other attachment is the error.  I don't know what could be missing.  I even re-booted the server. webserver
J.R. SitmanAsked:
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Donald StewartConnect With a Mentor Network AdministratorCommented:
Donald StewartNetwork AdministratorCommented:
Install ASP.Net and try again
J.R. SitmanAuthor Commented:
Thanks, the article turned on the light in my head.  The Windows Authentication wasn't installed.
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