What is thunderbirdforu3start.exe doing on my computer?
thunderbirdforu3start.exe is a process
from Licensed under the GPL
Non-system processes like thunderbirdforu3start.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.