Question

I have the Portable Library Tools beta 2 installed in Visual Studio 2010. I created a new library and set it to be compatible with .Net 4.0.3 and Silverlight 5. I then tried to add a reference to the PCL project from a Silverlight Web project. I got the message:

Unable to add a reference to project “PortableClassLibrary”. The
current project’s target framework is not one of or compatible with
the target frameworks of Portable Library project
“PortableClassLibrary”.

A Portable Library project’s target frameworks can be changed via the
Library tab in the project’s properties.

I don’t want to change the PCL target, I want to change the target of the Web project. I went the the Properties > Application tab and the Target framework is “.Net Framework 4.0”. There wasn’t an option for 4.0.3. I checked and realised that the update for 4.0.3 (KB2600211) wasn’t installed on this machine, so I installed it and rebooted, as requested.

There still isn’t a 4.0.3 option in VS and I’m still getting the message. Any ideas?

EDIT

VS 2010 SP1 is already installed.

Answer 1

To target .NET Framework 4.0.3, you need to install KB2600214, and then change the Project Properties -> Application -> Target Framework to .NET Framework 4.0.3.