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Thunderbird won't start on second and subsequent attempts after upgrade to 115.10.0 today

  • 3 replies
  • 6 have this problem
  • 16 views
  • Last reply by Wayne Mery

I've been using Thunderbird for years and have never had this problem. Since the upgrade today, after I run Thunderbird once and close it I can no longer start it up again. I have to reboot or use Task Manager to kill it in order to run it. This is on Windows 11. Please help - not an acceptable workaround for long. Optionally, how do I downgrade to previous version? I should know better than allow automatic upgrades.

Adding a couple images below, when it has started successfully it shows as one of the Apps in Task Manager. When I close it, Thunderbird drops into the Background Processes but doesn't end. I have to kill it here in order to start it again.

I've been using Thunderbird for years and have never had this problem. Since the upgrade today, after I run Thunderbird once and close it I can no longer start it up again. I have to reboot or use Task Manager to kill it in order to run it. This is on Windows 11. Please help - not an acceptable workaround for long. Optionally, how do I downgrade to previous version? I should know better than allow automatic upgrades. Adding a couple images below, when it has started successfully it shows as one of the Apps in Task Manager. When I close it, Thunderbird drops into the Background Processes but doesn't end. I have to kill it here in order to start it again.
Attached screenshots

All Replies (3)

115.10.1 should be available on Thursday.

Thank you for taking the time to respond Wayne. I see now there are more reports of the same thing. I couldn't find any yesterday otherwise I would've simply noted I have the same issue.

115.10.1 is available for update, from Help > About. Or download from the website.