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

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

Problem with Theme and Font Size Changer Addon SOLVED: use fixed add-on [was How can I revert back to an earlier version of Thunderbird]

  • 5 replies
  • 1 has this problem
  • 29 views
  • Last reply by Nikilet

My TB has updated to v. 60 and now my Theme Font & Size Changer does not work I want to go back to an earlier version. Please help me to do this. When I click on it I get this box, which gives me no options to change anything.

Can I choose whether I want to install the latest update?

My TB has updated to v. 60 and now my Theme Font & Size Changer does not work I want to go back to an earlier version. Please help me to do this. When I click on it I get this box, which gives me no options to change anything. Can I choose whether I want to install the latest update?
Attached screenshots

Modified by Wayne Mery

Chosen solution

sfhowes said

The fixed TF&SC add-on works here in TB 60. https://addons.thunderbird.net/en-us/thunderbird/addon/theme-font-size-changer-fixed/ Drag the Download Now button and drop it onto Tools/Add-ons/Extensions in TB.

Thank you very much. This seems to have worked.

Read this answer in context 👍 0

All Replies (5)

I think you mean Thunderbird, not Firefox?

See this post: https://support.mozilla.org/en-US/questions/1232086#answer-1149725

Does that help?

As for updating, go to:

Tools|Options|Advanced|Update

Modified by Zenos

Zenos said

I think you mean Thunderbird, not Firefox? See this post: https://support.mozilla.org/en-US/questions/1232086#answer-1149725 Does that help? As for updating, go to: Tools|Options|Advanced|Update

That's what I said -- TB -- Thunderbird. Thanks for the direction on changing the updates so that I can decide if I want to install them.

Modified by Nikilet

Maybe read the title of your post.

Airmail said

Maybe read the title of your post.

My apologies. I meant Thunderbird.

Chosen Solution

sfhowes said

The fixed TF&SC add-on works here in TB 60. https://addons.thunderbird.net/en-us/thunderbird/addon/theme-font-size-changer-fixed/ Drag the Download Now button and drop it onto Tools/Add-ons/Extensions in TB.

Thank you very much. This seems to have worked.