Die Funktionalität dieser Website ist durch Wartungsarbeiten eingeschränkt, die Ihr Erlebnis verbessern sollen. Wenn ein Artikel Ihr Problem nicht löst und Sie eine Frage stellen möchten, können Sie unsere Gemeinschaft über @FirefoxSupport auf Twitter, /r/firefox oder Reddit fragen.

Hilfe durchsuchen

Vorsicht vor Support-Betrug: Wir fordern Sie niemals auf, eine Telefonnummer anzurufen, eine SMS an eine Telefonnummer zu senden oder persönliche Daten preiszugeben. Bitte melden Sie verdächtige Aktivitäten über die Funktion „Missbrauch melden“.

Weitere Informationen

Error Message When Trying to Open the App

  • 1 Antwort
  • 0 haben dieses Problem
  • 1 Aufruf
  • Letzte Antwort von Toad-Hall

more options

Hello,

I am trying to open the Thuderbird app on my Windows desktop PC, however I keep getting the following error message before the program even opens:

``Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window.``

I have tried closing the background processes using alt, ctrl, delete. I also tried uninstalling, and then reinstalling the Thunderbird app from the setup file. I`ve also tried deleting the setup file, and installing it again fresh from the website.

Every time, the same error message appears and I cannot open it.

How can I solve this problem?

Thank you so much.

Hello, I am trying to open the Thuderbird app on my Windows desktop PC, however I keep getting the following error message before the program even opens: '''``Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window.``''' I have tried closing the background processes using alt, ctrl, delete. I also tried uninstalling, and then reinstalling the Thunderbird app from the setup file. I`ve also tried deleting the setup file, and installing it again fresh from the website. Every time, the same error message appears and I cannot open it. How can I solve this problem? Thank you so much.

Alle Antworten (1)

more options

Maybe it's possible Thunderbird had not completely updated all background processes before computer was shut down, so it still has a setting which the program reads as 'I'm already running'.

Try this:

In bottom search type: %Appdata% - see image below as guide

  • select the %Appdata% file folder
  • select 'Roaming' folder
  • select 'Thunderbird' folder
  • Select 'Profiles' folder
  • select 'the profile name ' folder
  • delete this file : parent.lock

When you Start thunderbird that file will get recreated which is normal.