Hi. I'm at a total loss to explain that this has solved itself. I did nothing. I had given up in frustration. Then I clicked a short cut on the desktop [Firefox is my default browser] and the page opened. Then I checked using the address bar within Firefox and it now works. I've no idea why. So the main problem [below] is resolved. Now I just need to sync Firefox on Windows11 with Firefox on Android [and not the other way around]. Hope there's a web page to explain on which device I should click on "sync". This can probably be archived but I'm not sure I know how to do that. RE: Firefox 128.0.3 64-bit running on: Edition Windows 11 Home Version 23H2 OS build 22631.3880 Experience Windows Feature Experience Pack 1000.22700.1020.0 Avast for antivirus but with no Avast firewall installed. I use the basic Windows Defender as firewall. I had problems with the address bar. At attempt to reinstall Firefox ended up corrupting it. I had no option except to delete Frefox and do a fresh install. That is complete. I tried to search from the address bar and it does not work. I also tried using shortuts on the New Tab page and none work. In all cases, the browser attempts to to find the address but never actually gets to anywhere. Other browsers all work. I opened Firefox in Safe Mode and the address bar works fine. I have no idea what to do next to resolve this. The internet offers no help; what it tells me to do does,'t match what I see on my screen. Thanks in advance for a solution. Thanks for any advice of how to resolve this.