Link Removed
Don't give up, Mike. IE10 should bes 64 or 32Bit compatible. Follow the item I have arrowed in my picture, and either select it or unselect it, according to what it shows at present. unticking the item makes the browser a lot more compatible with older web sites.
But I would have thought the compatibility suggestion would have done the trick?
Just to recap,
Click on ‘Compatibility View Settings’ and under ‘Add this website’ and type the web address and click on ‘Add’.
Now try to access the website.
A deeper approach.
Click on Tools - F12 Developer Tools. Click on the Browser Mode:10, menu and select Internet Explorer 8 or 9.
That must surely do the trick
Later:
I have just tried, I think, every relevant setting in IE 10. Whatever alteration I made, I was still able to open the Comcast home site? So now I suspect it is some third party protection you have running on your computer. Question would be - Why would it try to protect you from that particular site? By the way, I don't know if it is connected, but you do have java and Flash installed?
Sorry, back again. Just read the preceding post. Actually, if you are in a 64Bit OS, then IE10 is both 32Bit and 64Bit. Enabling the enhanced mode, as I suggested, makes the default for tabs, 64Bit.