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on startup thunderbird creates 40-50 instances of the app spontaneously

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  • Last reply by Onno Ekker

kenwthompson
kenwthompson
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windows 10 64bit machine 32bit thunderbird 52.6.0 Starting creates flashing screen which creates 40-50 thunderbird screens. I only need one. How do I stop this from happening

windows 10 64bit machine 32bit thunderbird 52.6.0 Starting creates flashing screen which creates 40-50 thunderbird screens. I only need one. How do I stop this from happening

Chosen solution

Thunderbird remembers its state between sessions. You have to remove the file in which this data is stored. In order to do so, follow these instructions:

  1. Start Thunderbird and wait for all the screens to open;
  2. Go to the menu (press Alt or F10) and choose Help > Troubleshooting Information;
  3. Under Application Basics next to Profile Folder press the button Open Folder;
  4. Close Thunderbird;
  5. In Windows Explorer (opened in step 3) remove the file session.json or rename it to session.json.bak.

Start Thunderbird again and only one screen will be opened

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Onno Ekker
Onno Ekker
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Chosen Solution

Thunderbird remembers its state between sessions. You have to remove the file in which this data is stored. In order to do so, follow these instructions:

  1. Start Thunderbird and wait for all the screens to open;
  2. Go to the menu (press Alt or F10) and choose Help > Troubleshooting Information;
  3. Under Application Basics next to Profile Folder press the button Open Folder;
  4. Close Thunderbird;
  5. In Windows Explorer (opened in step 3) remove the file session.json or rename it to session.json.bak.

Start Thunderbird again and only one screen will be opened