What is nemall_dataoptima12.dll doing on my computer?
nemall_dataoptima12.dll is a NAPDAT
belonging to Allplan
from NEMETSCHEK Allplan GmbH
Non-system processes like nemall_dataoptima12.dll 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.