Driver for OKI ML420n
Table of Contents

The official driver for the OKI ML420n printer is essential for the initial connection of the device to your computer and for reinstalling the Windows operating system. This driver enables the system to recognize the printer for subsequent use, as well as to facilitate setup and printing. The installation process is automated and should not cause any issues; however, a system restart is necessary after installation to implement the changes.
You can download the driver for the OKI ML420n that matches your operating system version from the table below. After downloading, we recommend reviewing the installation instructions.
Download Driver for OKI ML420n
OS Versions: Windows 11, Windows 10 32-bit, Windows 10 64-bit, Windows 8.1 32-bit, Windows 8.1 64-bit, Windows 8 32-bit, Windows 8 64-bit, Windows 7 32-bit, Windows 7 64-bit | |
Driver Type | Download |
Universal PCL5 Printer Driver |
On this page, you can download the OKI ML420n driver for free! Get the necessary drivers for Windows, Linux, and Mac operating systems.

How to Install the Driver for OKI ML420n
- Download the driver from the table for your version of the Windows operating system.
- Run the downloaded file.
- Accept the “License Agreement” and click “Next.”
- Specify the connection method for the printer to your computer and click “Next.”
- Wait for the installation to complete.
- Restart your computer to apply the changes.


Before installing the driver, ensure that no other version is installed on your computer. If there is, please uninstall it before proceeding with the new installation.
Common Errors and Solutions During Driver Installation
- Printer Detection Issue: If the device is not detected, it is recommended to download a different version of the driver.
- Printing Issues: If the printer does not print after installing the driver, make sure to restart your computer.
- Unable to Launch Driver File: If the file does not open, check your system for viruses, then restart and try again.