When trying to deploy an ASP.NET application deployment package to IIS, I receive an error
(The application pool that you are trying to use has the 'managedRuntimeVersion' property set to 'v2.0'. This application requires 'v4.0'.
I have taken these steps:
What is the root cause of this error, and how can it be solved?
Web Deploy uses the default IIS web site settings while publishing. To change/confirm this on your IIS machine:
If you're trying to import this application into an existing site , ensure that its application pool is the same version. I was attempting the same, but didn't realize my 'new' website was running on an app pool that was v2.
Be sure that your Application Pools by default are configured also for v4.0 by default.
ASP.NET 4 is installed when you install Visual Studio. However, the installation process does not automatically register ASP.NET 4 with IIS, and existing IIS Web sites are not automatically assigned to.NET 4 application pools.
To fix this , register ASP.NET with IIS and set the application pool of the destination IIS Web site to the .NET Framework version that is required by the package.
To do this , open Command Prompt
as administrator and go to C:\Windows\Microsoft.NET\Framework64\v4.0.30319
and type: aspnet_regiis -i
According to Web Deployment FAQ for Visual Studio and ASP.NET
I was trying to use Continuos Deployment in VSTS/TFS, in my Release Definition (which was default), I had a IIS Web App Manage Task (named Manage IISWebApplication), where it had Parent website name setting with the correct website name, and the Virtual Path setting was right as well.
I just had to fix the web site name in the Deployment Process section, where it has the Environment Name and Website name as well.
Silly, but it got me 2 days to notice the web site name was in two places in the Release Definition.
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