Download itunes 10.3 - unknown publisher??

when i try to download itunes 10.3 I am getting a internet security warning pop-up screen that states Name: itunes64Setup.exe  Publisher: Unknown Publisher... then it goes on to say that 'this file has been blocked because it does not have a valid digital signature that verifies its publisher.'  How on earth could it be that Apple would not be up to date? any ideas as i reckon i have tried this 10 times now. I also tried to save the file and then open. that doesnt work either. I am set up as administrator so that isnt a problem i dont think....??

Hi.
I was having the same problem. Have you rectified the issue since your post.
if not, are you connecting to the internet through a wireless router. if so you need to connect through a LAN and this will allow it to be installed.

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