Uninstall and then install again..

Thank you for responding, I was not asking for help:

I posted here because I could find not other way to inform Mozilla of this issue. I have never had an update issue like this with Firefox before.

See if this helps you: https://support.mozilla.org/en-US/kb/fix-problems-connecting-websites-after-updating

It is possible that your firewall or other security software blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to install for Firefox and the plugin-container process and the updater process.

See:

• https://support.mozilla.org/kb/Server+not+found
• https://support.mozilla.org/kb/Firewalls

• https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating

I uninstalled and reinstalled. All is well now,