Nothing happens when I type a URL into the location bar and press Enter. Nothing happens if I type anything into the search bar.
Firefox will not go to any URL typed into the location bar. Nor will it search for anything typed into the search bar. I have tried opening Firefox in Safe Mode, unchecking the compatibility options, clearing my recent history (the history icon doesn't even appear in the Firefox toolbar anymore), setting all Add-Ons to "Always activate," rebooting the computer, and uninstalling and reinstalling Firefox, and nothing so far has work. The uninstall function must not completely uninstall Firefox because it does not delete my bookmarks which are all still present. The first symptom of a problem was an error message and the first fix I tried was reinstalling Firefox without uninstalling first. Now the error message no longer appears and I do not remember what it was.
Chosen solution
Some problems occurs when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted.
When you removed the old entry, the firewall created a new one.
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Your user agent shows that you run Firefox in compatibility mode for Windows 98 (NT 4.10).
Make sure that you do not run Firefox in compatibility mode. You can open the Properties of the Firefox desktop shortcut via the right-click context menu and check the "Compatibility" tab. Make sure that all items are deselected in the "Compatibility" tab of the Properties window.
I had already unchecked all the compatibility options and it didn't work. Since I asked the question I removed Firefox from the list of trusted programs in my Norton 360 firewall, but lost my nerve before saving the change because I didn't know how to add it back, and canceled the change. But right after that Firefox started working like it's supposed to. I don't know why. Nor do I know why it stopped working in the first place. But hopefully the problem is solved, for whatever reason.
Chosen Solution
Some problems occurs when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted.
When you removed the old entry, the firewall created a new one.
Does the user agent still has Windows NT 4.10 in it?
There have been more threads about the location/address bar not working when Firefox is running in compatibility mode, so you need to check this again possibly in the properties of the firefox.exe program.
- [NT 4.10"]