Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Fonts suddenly shrank on basic screens including account listings in left column and the incoming mail listings in the middle.

  • 1 reply
  • 1 has this problem
  • 3 views
  • Last reply by sfhowes

more options

Thunderbird worked fine for more than a year. Then suddenly the fonts on the opening screen got smaller. This affects the left column with mail accounts and their folders, as well as the list of emails (subject, sender, etc.). I've tried all the menus and options, but have only succeeded in changing the font size of messages I send or reply to. If this can't be fixed, I'll need to go back to (shudder) Exchange.

Thunderbird worked fine for more than a year. Then suddenly the fonts on the opening screen got smaller. This affects the left column with mail accounts and their folders, as well as the list of emails (subject, sender, etc.). I've tried all the menus and options, but have only succeeded in changing the font size of messages I send or reply to. If this can't be fixed, I'll need to go back to (shudder) Exchange.

All Replies (1)

more options

Run TB in safe mode (hold Shift when you launch TB). Any change?