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

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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?

額外的系統細節

應用程式

  • Firefox 61.0.1
  • 使用者代理:Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:61.0) Gecko/20100101 Firefox/61.0
  • 技術支援網址:https://support.mozilla.org/1/firefox/61.0.1/Darwin/en-US/

擴充套件

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  • Converter 100.7 (web@Converter) (Inactive)
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JavaScript

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修改過的偏好設定

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FredMcD
  • Top 10 Contributor
4221 個解決方法 58912 個答案

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

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
  • Top 10 Contributor
520 個解決方法 4878 個答案

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.

''jdoody [[#question-1237604|said]]'' <blockquote> I need an earlier version of Firefox that will support Java. </blockquote> 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 ..... <blockquote> my current Firefox which is the latest version and that I use for everyday items. </blockquote> 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.