Windows 10 reached EOS (end of support) on October 14, 2025. For more information, 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

Migrating from [very] old Thunderbird to current version

  • 2 replies
  • 0 have this problem
  • Last reply by zyzoff

zyzoff
zyzoff
more options

I've been using Thunderbird for many years. My current version is 45.2.0. My computer runs Linux Kubuntu 15.10

So yes, it's ten years old and it's showing its age. I have a new box I built, and have Kubuntu 25.04 installed. It installed the then current version of TB. I have yet to set things up, but migrating is a priority now.

Some solutions say (on ubuntu/kubuntu) to just copy the directory "/home/username/.thunderbird/profile.default" from the old to the new box. I would likely do it by zip, rar or ssh transfer.

If I do that, when opening up TB on the new box, does the data get converted? and if so, is it automatic? It seems to me that after then years, the data format would have some changes.

I'd appreciate any insight on this. Thank you.

I've been using Thunderbird for many years. My current version is 45.2.0. My computer runs Linux Kubuntu 15.10 So yes, it's ten years old and it's showing its age. I have a new box I built, and have Kubuntu 25.04 installed. It installed the then current version of TB. I have yet to set things up, but migrating is a priority now. Some solutions say (on ubuntu/kubuntu) to just copy the directory "/home/username/.thunderbird/profile.default" from the old to the new box. I would likely do it by zip, rar or ssh transfer. If I do that, when opening up TB on the new box, does the data get converted? and if so, is it automatic? It seems to me that after then years, the data format would have some changes. I'd appreciate any insight on this. Thank you.

All Replies (2)

david
david
  • Top 10 Contributor
more options

You're right, some settings and files have changed though the years. I am not familiar with all of them, but I do recall that the addressbook was converted from mab to sqlite in ver 78. To bypass 78 would force user to use the import tool. This URL may be useful for you: 

https://support.mozilla.org/en-US/kb/upgrading-older-version-thunderbird
zyzoff
zyzoff Question owner
more options

Thank you. I'll dive into this and hope it works.

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.