When I click Show Update History a popup says unable to determine if update available.
This message also pops up by itself during my use of Firefox.
This message also pops up by itself during my use of Firefox.
Todas as respostas (1)
Windows XP and Vista have been having problems with the newer Firefox versions. You might not be able to update.
https://support.mozilla.org/en-US/kb/get-latest-version-firefox-windows-xp-vista