当前版本：v5.1.7，Build 31736，发布于 2025年12月18日
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Firefox 45.0.1 was one of the last versions to support older operating systems that have since been phased out by modern web standards. Minimum Requirement Windows XP SP2, Vista, 7, 8, or 10 Mac Mac OS X 10.6 through 10.11 Linux GTK+ 2.18, GLib 2.22, Pango 1.14 Hardware Pentium 4 or newer (SSE2 support required) The Extended Support Release (ESR) Factor
This version disabled the Graphite font shaping library to mitigate potential security or stability risks. System Requirements and Compatibility
Firefox Thinks It's Running an Older Version Than Last Time (But Isn't!)
Released just eight days after the major 45.0 update, version 45.0.1 was primarily a designed to address regressions that appeared in the initial launch.
It resolved issues where pages would fail to load if the "Accept third-party cookies" setting was set to "Never".
Developers fixed a regression in the location bar and an issue where the list of search providers could appear empty.
While users can still find version 45.0.1 in Mozilla's FTP directory or on sites like OldVersion.com, Mozilla strongly advises against using legacy browsers for daily tasks.
Firefox 45.0.1 was one of the last versions to support older operating systems that have since been phased out by modern web standards. Minimum Requirement Windows XP SP2, Vista, 7, 8, or 10 Mac Mac OS X 10.6 through 10.11 Linux GTK+ 2.18, GLib 2.22, Pango 1.14 Hardware Pentium 4 or newer (SSE2 support required) The Extended Support Release (ESR) Factor
This version disabled the Graphite font shaping library to mitigate potential security or stability risks. System Requirements and Compatibility mozilla firefox 450 1 old version
Firefox Thinks It's Running an Older Version Than Last Time (But Isn't!) Firefox 45
Released just eight days after the major 45.0 update, version 45.0.1 was primarily a designed to address regressions that appeared in the initial launch. It resolved issues where pages would fail to
It resolved issues where pages would fail to load if the "Accept third-party cookies" setting was set to "Never".
Developers fixed a regression in the location bar and an issue where the list of search providers could appear empty.
While users can still find version 45.0.1 in Mozilla's FTP directory or on sites like OldVersion.com, Mozilla strongly advises against using legacy browsers for daily tasks.
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