MegaMan NT Warrior - Season 5 Episode 23 Jammingman
Overview: Phantom NetNavis soon begin substantiating everywhere, and since no one can distinguish them from their original counterparts, NetNavis begin to distrust one another. Raika returns to DenTech City to tell of his encounter with Phantom MegaMan and ProtoMan, but something worse has happened. An unknown NetNavi has cut off access to the internet throughout the entire world.