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.

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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

Mac OS (11.1) - Thunderbird 78.6.0 - No main window. Solved by reinstall

  • 3 uphendule
  • 1 inale nkinga
  • 7 views
  • Igcine ukuphendulwa ngu Wayne Mery

hamed2
hamed2
more options

Dear All, I received an update and installed it. Afterwards my TB does start but no main window appears. On the menu bar I can see a beach ball. I search a little bit and installed the latest version that I could find, which seems to be 78.6.0.

Still no change and not able to read my emails, since there is no main window.

I tries also to start the application with "option safe mode" and de-activated the add-ons and rest of the menu bar...no success so far.

Any other hint and tip that you share with me, please ?


Thanks HS

Dear All, I received an update and installed it. Afterwards my TB does start but no main window appears. On the menu bar I can see a beach ball. I search a little bit and installed the latest version that I could find, which seems to be 78.6.0. Still no change and not able to read my emails, since there is no main window. I tries also to start the application with "option safe mode" and de-activated the add-ons and rest of the menu bar...no success so far. Any other hint and tip that you share with me, please ? Thanks HS

Okulungisiwe ngu Wayne Mery

Isisombululo esikhethiwe

Hi there,

the access is checked and I need TB to be able to have access. I re-installed the application again and restarted my laptop.

Everything does work as before again. My main windows is back.


Thanks a lot for the suggestion and fast feedback.

Funda le mpendulo ngokuhambisana nalesi sihloko 👍 0

All Replies (3)

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
more options

Try disabling Thunderbird access to Mac address book.

Mac System Preferences > Security & Privacy > Privacy > Contacts > click the lock to allow changes > uncheck Thunderbird

Does that help?

hamed2
hamed2 Umnikazi wombuzo
more options

Isisombululo Esikhethiwe

Hi there,

the access is checked and I need TB to be able to have access. I re-installed the application again and restarted my laptop.

Everything does work as before again. My main windows is back.


Thanks a lot for the suggestion and fast feedback.

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
more options

hamed2 said
Hi there, the access is checked and I need TB to be able to have access.

Sure. Bear in mind however, this is known to cause problems for some users on Big Sur.

hamed2 said
I re-installed the application again and restarted my laptop. Everything does work as before again. My main windows is back.

Good call. That was going to be my second suggestion. For reasons we don't know, this solution helps on Mac.