Qlikview 11 SR1 is also compatible with Server2008 R2 x64 with embedded IIS 7.5
Be carefull you must run both x86 and x64 fixes of .NET 4.0 "aspnet_regiis.exe -i" after the installation of IIS 7.5 and components, with 2-3 more customization steps you will succeed.
For better understanding read this post : http://community.qlik.com/thread/45497?start=15&tstart=0
Also the most important step is to modify the application pool configuration of "QlikView IIS" module.
Navigate through :
IIS Manager console --> Application Pools --> QlikView IIS (advanced settings Right Click) --> Identity.
There you must change the value with a specific user account ...
(In my configuration i filled the identity field with the same username/password as my Qlikview windows services)
Check the prtscr below:
With these steps i made the IIS 7.5 to work with QlikView Server v11 SR1.
May -> Jun -> Jul -> Aug -> Sep