What is backgrounddownloader.exe doing on my computer?
backgrounddownloader.exe is a Downloader
belonging to Blizzard Downloader
from Blizzard Entertainment
Non-system processes like backgrounddownloader.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.