Firefox Download For Mac 10105 Upd
You cannot get this version through the standard "Download Firefox" button on the main Mozilla page (that will give you an error saying your OS is too old).
Follow these steps to get the correct version: firefox download for mac 10105 upd
| Error Message | Solution |
| :--- | :--- |
| “Firefox is damaged and can’t be opened” | Your download is incomplete. Redownload the DMG from the FTP link above. |
| “A newer version of Firefox is already in your Applications folder” | Delete all existing Firefox instances (including subfolders). Then reinstall 78.15.0 ESR. |
| *“Your browser is out of date” website warning | You cannot fix this fully. Try a user-agent switcher add-on, but many modern JavaScript functions will still fail. |
| Certificate errors on major sites (Google, YouTube) | Firefox 78’s root certificates are largely expired. Go to Preferences > Privacy & Security > Certificates > Query OCSP responder servers — enable this, but expect some sites to not load. | You cannot get this version through the standard
Download the file:
Firefox 78.15.0esr.dmg (size ~85 MB). Install: