The following web address won't open up in my FireFox while it does on Chrome

Sorry, I don't see the address. Was it in a screenshot that didn't upload? You can reply to this thread and paste it into the reply box.

https://support.mozilla.org/questions/1286820#question-reply

Make sure you are not blocking content.

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop

Sorry for forgetting problematic the web address. It is https://messages.google.com/web/conversations The parent one that DOES open is https://messages.google.com/

https://messages.google.com/ - This one opens https://messages.google.com/web/conversations - This one does not

Have you tried Safe Mode?

Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

• Delete cookies to remove the information websites have stored on your computer {web link}

• How to clear the Firefox cache {web link}

If there is still a problem, Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Did this help?

While you are in safe mode;

Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches.

How to disable Hardware Acceleration {web link}

Update: I haven't tried the Safe Mode yet, however, the problem doesn't occur in the Firefox running on my laptop (Windows 10 Pro 64-bit).