This tutorial will show you how to enable or disable showing preview handlers in the the preview pane of File Explorer for your account in Windows 10 and Windows 11.
The preview pane in File Explorer shows you the contents of a file, such as image or text files, without having to open it with an app.
Preview handlers show the content of text files (ex: .bat, .cmd, .html, .ps1, .reg, .txt, etc...) in the preview pane.
Reference:
https://learn.microsoft.com/en-us/windows/win32/shell/preview-handlers
Option One: Enable or Disable Show Preview Handlers in Preview Pane of File Explorer in Folder Options
Option Two: Enable or Disable Show Preview Handlers in Preview Pane of File Explorer using REG file
Option Three: Enable or Disable...