Required applications are not installed correctly

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Why disable it? Because Windows will show this message even when the program is installed correctly, this is why the sentence has a word “might” in it. If you see “This program might not have installed correctly” dialog window frequently, you might want to disable it. Does Program Compatibility Assistant dialog pop up every now and then on your Windows 7 system? At first I thought it to be a useful feature but then it got annoying just like in Windows Vista.