What is n5shellextension.dll doing on my computer?
n5shellextension.dll is a N5ShellExtension
belonging to NitroPDF Professional ShellExtension
Non-system processes like n5shellextension.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.