Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

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
This thread was archived. Please ask a new question if you need help.
Archived

error message <window <="" id="messengerWindow" p=""></window>

Thunderbird Installation and updates
sfhowes replied
alan149
alan149

Firefox has just crashed on my mac. running 78.8.1. Completely removed it and started with a new profile and it works. Tried reinstalling my backup profile and it crashes with the little message box.

Firefox has just crashed on my mac. running 78.8.1. Completely removed it and started with a new profile and it works. Tried reinstalling my backup profile and it crashes with the little message box.

All Replies (5)

alan149
alan149 Question owner

Hi The error I am getting is attached. Recently updated to Big Sur and the problems started then.

cor-el
cor-el
  • Top 25 Contributor
  • Moderator

That screenshot seems to be about Thunderbird, so is your question about Thunderbird or about Firefox ?

If this is about Thunderbird then we can move the thread to Thunderbird Support.

alan149
alan149 Question owner

Sorry - It is thunderbird that is the problem. Must be old age!

cor-el
cor-el
  • Top 25 Contributor
  • Moderator

I've moved the question to Thunderbird support.

sfhowes
sfhowes

See https://support.mozilla.org/en-US/questions/1322028