Install ASP.NET 4.0 alongside ASP.NET 2.0 on IIS6
问题 I've read where you create a new application pool, one for 2.0 sites and one for 4.0 sites. But there is no option I see when creating a pool to configure the framework. My problem is I have several 2.0 sites running as the Default Web Site. I added a WCF 4.0 service under a new virtual directory and set the framework to 4.0. I also put it in a separate app pool. Now, I can only get one working at a time. Either the 2.0 sites or the 4.0 site. I get: It is not possible to run two different