High Quality Content by WIKIPEDIA articles! WinFixer is a family of scareware rogue security programs developed by Winsoftware which claim to repair computer system problems on Microsoft Windows computers if a user purchases the full version of the software. The software is mainly installed without the user`s consent.McAfee claims that "the primary function of the free version appears to be to alarm the user into paying for registration, at least partially based on false or erroneous detections." The program prompts the user to purchase a paid copy of the program.