Additional versions

18.7.2.3	73.53%
18.7.1.3	8.82%
18.6.0.29	2.94%
17.9.0.12	11.76%
15.5.0.32	2.94%

isError is part of Norton Internet Security, a PC program that provides malware prevention and removal during subscription period and uses signatures and heuristics to identify viruses, trojans and other malware. Norton Internet Security features include a email spam filtering, personal firewall, and phishing protection.

iserror.dll is loaded as dynamic link library that runs in the context of a process. The file is digitally signed by Symantec Corporation which was issued by the VeriSign certificate authority (CA).