Question from Patty J.: I recently found out about the free certificates from Let’s Encrypt. I asked my web host to install it for me so I can make my WordPress blog secure.

I installed the Really Simple SSL plugin and that took care of the redirects from http to https as well as most of the mixed content issues.

But Firefox is still blocking parts of my pages that it claims are still trying to load from insecure sources.

I’ve looked my pages over and I can’t find anything that appears to be loading from an insecure location. Everything on the page appears to be loading from URLs starting with https instead of http.

When I load the pages in Chrome it shows the green padlock with no warnings. It’s only Firefox that’s not cooperating.

I’m pulling my hair out here. How can I find out what Firefox is blocking for being insecure so I can fix it?

Rick’s answer:  [Read more…]