Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

Lightning is not included or installable in Thunderbird 54

  • 4 vastust
  • 2 on selline probleem
  • 7 views
  • Viimati vastas elflng

more options

As of the update yesterday, Lightning disappeared from Thunderbird. I am on the beta update channel. Further, trying to manually install it fails with an unsupported version message.

As of the update yesterday, Lightning disappeared from Thunderbird. I am on the beta update channel. Further, trying to manually install it fails with an unsupported version message.

Valitud lahendus

I have Lightning 5.6a2 running on TB 54.0a2 (Earlybird), which is not the same as TB 54.0b2 (Beta), which may account for the error. You probably want Lightning 5.6b2, available here. I understand the Earlybird channel will be retired soon, leaving the release, beta and nightly channels.

Loe vastust kontekstis 👍 0

All Replies (4)

more options

Lightning 5.6 is compatible with TB 54. You can find it here.

https://developer.mozilla.org/en-US/docs/Mozilla/Calendar/Calendar_Versions

more options

Still getting 'Lightning could not be installed because it is not compatible with Thunderbird 54.0.' Addons -> Gear -> Install add-on from file -> lightning-5.6a2.en-US.win32.xpi

more options

Valitud lahendus

I have Lightning 5.6a2 running on TB 54.0a2 (Earlybird), which is not the same as TB 54.0b2 (Beta), which may account for the error. You probably want Lightning 5.6b2, available here. I understand the Earlybird channel will be retired soon, leaving the release, beta and nightly channels.

more options

Thank you very much, that worked!