Pscfg.exe error generally occurs due to corrupted or missing pscfg.exe files. This error stops you from accessing different system functionalities. Pscfg.exe file is found in the system directory: C:windowssystem32. Pscfg.exe error also arises due to accidental deletion of Pscfg.exe file, virus or malware attacks and conflicts between exe files of different applications. You should fix the error as soon as possible to safeguard your system from corruption. Due to this error your system will become terribly slow, several applications will fail to run. Your internet speed will reduce and you get lots of annoying pop-up ads all the time. You can use registry repair tool to fix this error. It will scan your entire system registry and make it from all types of corruptions.