: Scammers often claim your browser is missing a "decoder" or "codec" to view content (like a video or document) to convince you to run their malicious executable file.
Since there isn't a single "plugin" that works across all browsers, the best way to handle these files is through specialized emulation software: application x-ms-dos-executable decoder plugin download
An application/x-ms-dos-executable decoder plugin is a software component that enables modern browsers and operating systems to recognize and execute MS-DOS executable files. This plugin acts as a bridge between the old MS-DOS file format and contemporary systems, allowing users to run classic applications seamlessly. : Scammers often claim your browser is missing