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I was wondering if there was a way to rollback or downgrade the .NET 4.5 runtime back to .NET 4.0. I am not talking about rolling back projects that are targetting 4.5 and bringing them back to 4.0, I am wondering if I upgrade the .NET framework to 4.5 of the runtime, is there a way to go back?

Brian David Berman
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There is a good attempt to explain it here by Hanselman. However, I believe it is still confusing.

The way I understand is that if you want to go back, you will need to uninstall 4.5 and 4.0 and re-install 4.0.

muratgu
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    I've read that before but I didn't quite see how it addresses my issue. Your awesome seems to address it though, if that is a correct solution, heh. – Brian David Berman Jul 08 '13 at 18:58
  • @brian: the article says that 4.5 is an in-place upgrade to 4.0; so the implication is that you need to re-install 4.0 if you want a clean rollback. – muratgu Jul 08 '13 at 21:09