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Can I install both .net 2.0 framework and .net 4.0 framework in one PC ?

Now Microsoft Visual Web Developer 2010 Express has been installed in my PC, but when I run older project , the system require to install .net 2.0 framework. I'm afraid that new .net 4.0 project maybe meet trouble after I install old .net 2.0 framework in my PC.


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There won't be any problems. They can both be installed on the same PC, without one messing up the other. They install to different folders.

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