On Monday September 25th from 10PM EDT - 12AM EDT (2AM UTC - 4AM UTC on September 26th), we will be performing system maintenance on the Firefox Accounts databases for two hours. During the maintenance window, there will be brief periods of a few minutes where users will not be able to login to their accounts. Please try again at a later time.

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.

El Capitan

  • 1 freagra
  • 1 leis an bhfadhb seo
  • 30 views
  • Freagra is déanaí ó James

more options

I am using El Capitan because I am using an old Mac. Operating system 10.11.6. I've tried downloading FESR but always get the same error (pictured). What is the problem?

I am using El Capitan because I am using an old Mac. Operating system 10.11.6. I've tried downloading FESR but always get the same error (pictured). What is the problem?
Attached screenshots

All Replies (1)

more options

llkabong said

I am using El Capitan because I am using an old Mac. Operating system 10.11.6. I've tried downloading FESR but always get the same error (pictured). What is the problem?

The problem is you are using a too old Mac OS version which is 10.11.6 (ten.eleven.six).

Firefox since Fx 79.0 and later including the current Fx 95 and 91 ESR requires Mac OS X 10.12 (ten.twelve) at minimum.

Besides updating your OS to Mac OS X 10.12 or later, the most current Firefox version you can install on mac OS 10.11 is Fx 78.9.0 ESR though it is EOL with no more updates.

https://support.mozilla.org/en-US/kb/firefox-mac-osx-users-esr

https://www.mozilla.org/firefox/78.0/system-requirements/ https://www.mozilla.org/firefox/79.0/system-requirements/ https://www.mozilla.org/firefox/95.0/system-requirements/

https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/en-US/ other locales at https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/

Athraithe ag James ar