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Internet Explorer Secuity Warning: Do you want to view only the webpage content that was delivered securely?

April 21st, 2011. Published under Uncategorized. No Comments.

I came across a computer with Internet Explorer 8 that was showing this warning every time he browsed to a new page within a few banking websites. I added the URL to the Trusted Sites zone, but this did not do the trick. I then enabled “Display mixed content” for the Trusted Zone, which should have done the trick (Internet Options -> Security tab -> Custom Level button.

However, this did NOT do the trick. The issue is that the website, which is secured with HTTPS, is trying to load some content that is NOT secure (via HTTP). This causes IE to throw the warning. The “Display mixed content” tells IE to ignore this issue. The reason this did not fix the issue in this case is because I enabled “Display mixed content” in the Trusted Sites zone, but the HTTP data was being loaded from another domain which was NOT in my Trusted Sites zone. I enabled “Display mixed content” for the Internet Zone as well and the warnings ceased.

I know what you are thinking. Isn’t this now less secure? The answer is “probably”, but in my opinion, this isn’t a big deal. Maybe I am wrong and this can trick you into having malicious code run, I’m not sure. Honestly, I think if any site loads HTTP data within and HTTPS session, its bad coding to begin with.

Anyway, there are a lot of posts for this fix out there, but many of them say the “Display mixed content” fix didn’t fix the issue for them at all. Maybe doing this for all zones will fix the issue for them.

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