Why won't itunes download on my computer? ERGENT

When i try and download itunes it says that "Content was blocked because it was not signed by a valid security certificate.

For more information, see "Certificate Errors" in Internet Explorer Help.

What should I do i need itunes on my computer to get my new iphone 4s set up. Please give me answers quick!

Make sure you download itunes directly from the apple website. And for some people, their computers may be a 64 bit computer, so google itunes 64 bit and try that.

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