win11 :Thunderbird will not launch, It appears the issue is Background Process labelled "Thunderbird" which is unresponsive to "end task" in Task Manager. Will launch after reboot

win11 :Thunderbird will not launch, It appears the issue is a Background Process labelled "Thunderbird" which is unresponsive to "end task" in Task Manager. Will launch after reboot. I have no clue as to how Tbird into this state, but it has happened more than once Thunderbird Version 156.0.1 Build ID 2026092215180