If you need help with a specific part of this configuration, let me know:

The search for "Xvid Video Codec for MX Player" stems from the legitimate need to install codec packs on the Android version of MX Player. If you are an Android user, the steps above will help you enable Xvid playback on your phone or tablet. However, if your goal is simply to watch an Xvid file on your Windows PC, you already have all the tools you need.