title: Secure way for registering .NET 4.5 on IIS 7.5 on Windows Server 2008 R2 SP1
body: <p>I have a Windows Server 2008 R2 SP1 machine with IIS 7.5. In IIS there is an  running asp.net mvc 3 app targeting .NET 4.0 framework. I need to publish an asp.net mvc 5 EF 6 targeting .NET 4.5 framework. </p>
  
  <p>I've already installed .NET 4.5. Now I have to register .NET 4.5 in IIS, my question is: Does aspnet_regiis command crash running apps on IIS? Is it required to restart the server or the site?</p>