Thunderbird won't start
Thunderbird suddenly won't launch. I get an error message that only one copy of Thunderbird can be open at a time. There is no other copy open (see image.
Thunderbird suddenly won't launch. I get an error message that only one copy of Thunderbird can be open at a time. There is no other copy open (see image.
All Replies (1)
If you use Windows, click open the Task Manage and scroll active tasks. Sometimes, Thunderbird closes but does not shut down. You can highlight and click 'end task' to close it.