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Okugcinwe kunqolobane

High Sierra 10.13.6

I-Thunderbird Installation and updates
James replied
Oirelav /
Oirelav /

Hi, I just downloaded and donated because I understood Thunderbirds would work with my old iMac but I cannot even install it. Did I miss something? Thanks

Hi, I just downloaded and donated because I understood Thunderbirds would work with my old iMac but I cannot even install it. Did I miss something? Thanks

All Replies (2)

sfhowes
sfhowes

The latest release, 128, requires OS X 10.15 or higher. For 10.13, use TB 115, as it only requires 10.12 and higher.

https://archive.mozilla.org/pub/thunderbird/releases/115.16.1/mac/

James
James
  • Moderator
  • Top 10 Contributor

For both Thunderbird and Firefox you need macOS 10.15 (ten.fifteen) or later and Windows 10/11 to run any version of Thunderbird and Firefox from 116.0 and on.

Thunderbird and Firefox 115 ESR does support the old eol macOS 10.12, 10.13, 10.14 along with Windows 7, 8, 8.1..

According to https://thunderbird.topicbox.com/groups/planning/T6689f5ad30cc4731 the last Thunderbird 115 update was going to be 115.15.0. However there were Tb 115.16.0esr and Tb 115.16.1esr updates for security fixes.

Not sure how long Thunderbird 115 ESR will indeed be supported however Firefox 115 ESR will be supported with updates till Fx 115.21.0esr in March 2025 unless Mozilla extends updates support again.

Okulungisiwe ngu James