This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

I cant seem to install Firefox 50 on my MAC OS Mohave. Also, how do I keep it separate from my current Firefox?

  • 2 fhreagra
  • 1 leis an bhfadhb seo
  • 13 views
  • Freagra is déanaí ó McCoy

jdoody
jdoody
more options

I need an earlier version of Firefox that will support Java. I'm told Firefox version 50 can. I tried to install it but my computer says it cannot install with the Mohave update. Can you help me with this? Also, I would like to keep Firefox 50 separate from my current Firefox which is the latest version and that I use for everyday items. How do I ensure it does not override my current Firefox?

I need an earlier version of Firefox that will support Java. I'm told Firefox version 50 can. I tried to install it but my computer says it cannot install with the Mohave update. Can you help me with this? Also, I would like to keep Firefox 50 separate from my current Firefox which is the latest version and that I use for everyday items. How do I ensure it does not override my current Firefox?

All Replies (2)

FredMcD
FredMcD
more options

I don't know Macs or Mohave and called for more help.

As far as having more than one version of Firefox;

Download the full installer of the program you want. During the install, switch to manual and select the folder where you want that Firefox placed.

Make sure you have a separate profile for each version because some things, like add-ons and some settings, are not compatible.

You can use sync to share password, bookmarks, and history. Anything else may not be compatible.

https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

McCoy
McCoy
more options

jdoody said

I need an earlier version of Firefox that will support Java.

The Firefox ESR 52 version for Mac (which still supports Java) you can download from here :

https://ftp.mozilla.org/pub/firefox/releases/52.9.0esr/mac/

I don't know if it's compatible with Mac Mojave, though .....

my current Firefox which is the latest version and that I use for everyday items.

According to you system details you're on version 61.0.1 - the latest (release) version is : 62.0.3 ......

How to run those two versions simultaneously : see FredMcD's post.