I would like to replicate issue. Is it possible for anyone to access that page? Also, is there a reason for the old version of Firefox?

If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, DuckDuckGo PE, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content.

• make sure your extensions and filters are updated to the latest version
• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content. You can click shield icon for more detail and possibly disable the protection. You can check the Web Console for messages about blocked content.

• https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
• https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track

You can check the Web Console (Tools -> Web Developer) for messages about blocked content and about the presence of mixed or unsafe content.

• https://developer.mozilla.org/en-US/Tools/Web_Console

You can check the Network Monitor to see if content is blocked or otherwise fails to load.

• https://developer.mozilla.org/en-US/Tools/Network_Monitor

If necessary use "Ctrl+F5" or "Ctrl+Shift+R" (Mac: Command+Shift+R) to reload the page and bypass the cache to generate a fresh log.

Jonzn4SUSE I am logging in to photos.caveman3.com, and the page that comes up has no thumbnail pictures.

I checked the browser, and it says I am up to date on Firefox version.

Thanks again for your help.

cor-el Regarding the suggestions below:

   Adblock+ is installed.  Pause on this site or pause on all sites has no effect
   Shield on the address bar is gray.
   Safe mode startup has no effect.
   Cntrl F5 has no effect.

Not sure how to use the Web console, and I know I don't have blocked content as Edge and IE both show the pages correctly with thumbnail pictures.

I also tried multiple reboots with no improvement.

I had to Enable TLS and the site works for me. I clicked a few links and then saw the page prompting me to enable TLS.

^: It looks that this is not about TLS, but about content that needs to be retrieved via an open HTTP connection (i.e. HTTPS isn't supported). If you would force HTTPS then content can't be loaded in this case.

I enabled the HTTPS option Firefox, and now the site will not open at all. I disabled the option and the site opens, but no thumbnail pictures. I have not figured out how to enable TLS. I am beginning to suspect that the blocking is on my computer as Chrome and Edge have stopped showing the thumbnails as well. Thanks for your continued help

I am glad to see that you could access the site. I tried everything I could think of to enable TLS, with no success. I clicked on every link down about 3 layers and did not see any page to enable TLS. I also searched on how to enable TLS, but came up empty. How did you (in explicit detail) get the TLS enabling page? Which links did you click (left click, right click, double click, etc). As mentioned on the last response, Edge and Chrome are also acting up now, so I must have other problems. I am going to start with Bitdefender and will report back if I solve the problem.

Yeah, let me get on Win10 and see what happens. Here are my TLS options in about:config in Linux.

On Win10 I already had TLS enabled and it works.

This goes wrong on that website when the thumbnail images are retrieved via HTTPS.

You can possibly use this JavaScript bookmarklet to change the https:// to http:// for images.

javascript:(function(){var imgs=document.querySelectorAll('img[src]');for(i=0;imgs[i];i++){imgs[i].setAttribute('src',imgs[i].getAttribute('src').replace(/^https/,'http'));}alert(i);})();

So this is about cache.nebula.phx3.secureserver.net that stores the thumbnail images is only supporting TLS 1.0 and no newer TLS protocols.

• https://www.ssllabs.com/ssltest/analyze.html?d=cache.nebula.phx3.secureserver.net

Web Console:

• This site uses a deprecated version of TLS. Please upgrade to TLS 1.2 or 1.3.