How I can fix this block if everything happen inside of my domain?
[blocked] The page at 'https://example.com/secure/CMS/Edit/Default.aspx' was loaded over HTTPS, but ran insecure content from 'http://example.com/en/?idkeep=True&DE_VM=4&DE_LNK=183_185790&DE_RND=536512159&id=183_185790': this content should also be loaded over HTTPS.
This happen in the CMS called EPiServer 6.
I was getting this problem. I removed "http:" prefix from that link.
old : iframe src="http://example.com" >
new : iframe src="//example.com" >
Now it's working perfect. Thank you.