You should change .NET version from the application pool settings. Right click on the application pool and click on Basic Settings, then choose the desired .NET framework. You sites should use different application pools, because they have different ASP.NET
versions.
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Re: how to register 2.0 and 4.0 framwork on windows server 2008 R2
Aug 26, 2011 05:41 AM|LINK
Hello,
You should change .NET version from the application pool settings. Right click on the application pool and click on Basic Settings, then choose the desired .NET framework. You sites should use different application pools, because they have different ASP.NET versions.
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