Downloading today is primarily for archival or legacy testing purposes, as this version reached its end-of-life on April 24, 2012 . While it introduced then-revolutionary features like "Personas" and the WOFF font format, it is now considered a significant security risk for daily browsing. Where to Download Firefox 3.6 Safely
On Windows 10, you might see: "The application has failed to start because its side-by-side configuration is incorrect." download old version of mozilla firefox 3.6
In some cases, digital archivists have saved the original download pages and executables from the 2010 era. Why People Still Use Firefox 3.6 Downloading today is primarily for archival or legacy
: You can find all historical releases, including the various sub-versions of 3.6 (like 3.6.28), at the Mozilla FTP Releases Directory . download old version of mozilla firefox 3.6