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I have a web server running IIS 6 which has .NET 2,3.5, and 4 installed. Everytime I install a .NET 4.0 web appication the ASP IIS Registration tool is ran which is clearing out some important registry entries for EnableExtionlessUrls. We have reinstall the .NET 4.0 framework but are still having the same problem. Has anyone else experienced this issue? Thanks,

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How are the .NET 4 web apps being installed? – squillman Sep 1 '10 at 16:46

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