An e-banking site that worked in Firefox for years no longer works in 145.0 under Ubuntu Studio 24.04.1 This is the help page for the error I am receiving: https://support.mozilla.org/1/firefox/145.0/WINNT/en-US/connection-not-secure However, the error message I received (see attached image) is not listed there. Since the e-banking site hasn't changed in ages, I suspect instead something in one of the recent Firefox updates. The site works fine in Safari under Sequoia 15.5 on a MacBook Air, and I can login in Firefox, so I doubt that there is a problem with the site's security certificate. Since both the MacBook Air and the Ubuntu PC are on the same LAN, I also doubt any network obstruction. I haven't found a wax to get any more detailed error information and would be grateful for tips on how to do so. Meanwhile, I would like to at least change from the standart Firefox release to the ESR veersion, but find no information on how to do so. I have currently set up Firefox to be pulled from the instructions in https://support.mozilla.org/en-US/kb/install-firefox-linux#w_install-firefox-deb-package-for-debian-based-distributions-recommended under "For Debian Trixie and Newer" How can I switch from my current Firefox under Ubuntu to an ESR release?