Hi, please see - Install an older version of Firefox, but be aware that an old version may compromise your security.

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Hello jbrandt, please, if you can, share with us the cloud based software that does not work with the 37.x FireFox version.

thank you

You can install a portable (ESR) Firefox version to access websites that do not work with the current Firefox release. The portable version comes with its own profile folder and doesn't interfere with the currently installed release version.

• http://portableapps.com/apps/internet/firefox_portable
• http://sourceforge.net/projects/portableapps/files/Mozilla%20Firefox%2C%20Portable%20Ed./