I need to know the use of aspnet_regiis.exe /iru command. I have visualstudio 2010 with framework 2.0 and 4.0. In IIS, i can able to view the framework 2.0 sites, after using the above command i can able to view the framework 4.0. I want to know the usage of command with parameters [/iru]. Kindly give me the solution for this problem.