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Editorial Team
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Asked: 2026-06-06T07:49:40+00:00

We are using Teamcity to do continuous integration builds for our website and have

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We are using Teamcity to do continuous integration builds for our website and have just upgraded our website to .Net 4.5RC. The application builds and runs in IIS express on my box and builds on our build server that I have installed .NEt 4.5RC on. But when we deploy it to the server that has had .Net 4.5RC installed on it we get the following error.

The application pool that you are trying to use has the ‘managedRuntimeVersion’ property set to ‘v4.0’. This application requires ‘v4.5’.

What can I do to fix this problem. I have tried setting the application pool on the server to 4.5, but can’t. See this SO post.

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  1. Editorial Team

    It turns out that it is a TeamCity problem. When we push the update directly to the site from Visual Studio 2012 RC it works fine. We have had to change the build runner in TeamCity to a command line runner that calls the WebDeploy 3.0 of VS 2012.

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