Error code 1015 otherwise described as "The registry is corrupted. The structure of one of the files containing registry data is corrupted or the system's memory image of the file is corrupted or the file could not be recovered because the alternate copy or log was absent or corrupted" 0x3F7, is a common error experienced by Windows NT, Vista, and XP users. "ERROR_REGISTRY_CORRUPT" will appear when the system detects invalid registries.