Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

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

Thread ini telah diarkib. Sila tanya soalan baru jika anda perlu bantuan.

Thunderbird won't open

  • 3 balasan
  • 3 ada masalah ini
  • 9 paparan
  • Balasan terakhir oleh conorcorderoy

amy.glazer
amy.glazer
more options

I keep getting the following msg. on a M2 Mac Mini running Ventura: "A copy of Thunderbird is already open. Only one copy of Thunderbird can be open at a time." I've tried numerous suggested fixes with no success.

I keep getting the following msg. on a M2 Mac Mini running Ventura: "A copy of Thunderbird is already open. Only one copy of Thunderbird can be open at a time." I've tried numerous suggested fixes with no success.

All Replies (3)

sfhowes
sfhowes
  • Top 10 Contributor
more options

Have you tried deleting the .parentlock file?

http://kb.mozillazine.org/Profile_in_use#Remove_the_profile_lock_file

TheWeaz
TheWeaz
more options

That has happened to me. Tried the parentlock solution and tried ending the task. Only a reboot would solve it.

conorcorderoy
conorcorderoy
more options

Can't delete parent.lock because Thunderbird is still running.

I live in an area where there are occasional power cuts. Every time I get a power cut Thunderbird tells me it can't open because it is already running. I do the whole %AppData% thing and try to delete parentlock, and get a message saying I can't delete parentlock because...Thunderbird is still running. So I have to uninstall Thunderbird and reinstall it. I have had to do this four times already and nobody seems to have a solution.

I can't believe I am alone in having this problem. Can't the guys at Mozilla fix this? None of my other programs/apps have this problem.

Help, please,

Conor