EP0NM400.DLL Informations - Download and Fix

Sometimes Windows system displays error messages regarding corrupted or missing EP0NM400.DLL files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent EP0NM400.DLL file can therefore effect in failed execution of the started process.

EP0NM400.DLL file EPSON Printer Driver. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of EP0NM400.DLL related errors on your device. You can also download EP0NM400.DLL file compatible with Windows 7, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 7, Windows Vista

File info

General information
Filename EP0NM400.DLL
File extension DLL
Description EPSON Printer Driver
Program EPSON Printer Driver
MIME type application/octet-stream
File type Driver
System Windows NT 32-bit
Copyrights © SEIKO EPSON CORPORATION 2004. All rights reserved.
Character set Unicode
Language cod English (U.S.)

There are various types of errors related to EP0NM400.DLL file. EP0NM400.DLL file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to EP0NM400.DLL file. If you encounter one listed below (or similar), please consider the following suggestions.

  • EP0NM400.DLL is corrupted
  • EP0NM400.DLL cannot be located
  • Runtime Error - EP0NM400.DLL
  • EP0NM400.DLL file error
  • EP0NM400.DLL file cannot be loaded. Module was not found
  • cannot register EP0NM400.DLL file:
  • EP0NM400.DLL file could not be loaded
  • EP0NM400.DLL file doesn't exist



Application could not be started because EP0NM400.DLL file is missing. Reinstall the application to solve the problem.


Problems related to EP0NM400.DLL can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing EP0NM400.DLL file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

EP0NM400.DLL file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with EP0NM400.DLL file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to EP0NM400.DLL file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of EP0NM400.DLL or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to EP0NM400.DLL file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the EP0NM400.DLL file with properly working version. To use the tool:

  1. Go to the Windows "Start" menu
  2. Type "cmd" in the search field
  3. Locate "Command Prompt" result – don't run it yet:
  4. Click the right mouse button and select "Run as Administrator" option
  5. Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the EP0NM400.DLL file error occured. In order to restore your system, follow the instructions below

  1. Go to the Windows "Start" menu
  2. Type "System Restore" in the search field
  3. Start the system restore tool – it's name may differ depending on version of the system
  4. The application will guide you through the process – read the messages carefully
  5. After the process has finished, restart your computer.

If all the above-mentioned methods failed and the EP0NM400.DLL file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace EP0NM400.DLL file

The last solution is to manually download and replace EP0NM400.DLL file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded EP0NM400.DLL file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of EP0NM400.DLL file example directory paths.

  • Windows 7: C:\Windows\System32\DriverStore\FileRepository\prnep00a.inf_amd64_neutral_92a4c727cdf4c2f7\Amd64\
  • Windows Vista: C:\Windows\System32\DriverStore\FileRepository\prnep001.inf_22b38952\Amd64\

If the steps did not solve your EP0NM400.DLL file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename EP0NM400.DLL
System Windows 7
File size 62464 bytes
Date 2009-07-14
File details
MD5 7b9f96426fc4e82250dbe842e94de783
SHA1 7431538bc847a79d58e1cb7f7f6104665d566e38
SHA256 73416bbdfc76c69b571a7e536784fe6b5f44b38703c598fa77655decebecc228
CRC32 47796830
Example file location C:\Windows\System32\DriverStore\FileRepository\prnep00a.inf_amd64_neutral_92a4c727cdf4c2f7\Amd64\
Filename EP0NM400.DLL
System Windows Vista
File size 57344 bytes
Date 2006-11-02
File details
MD5 71e738c567b64f968552ccc0abcaf731
SHA1 30ef11e3e1d168abb2a66c8d5b8ea09daaa9ea3d
SHA256 35da7f8ff1514806d6ee6334715e409d65931433d9ba1dd4f939ec7169250c23
CRC32 e3d06780
Example file location C:\Windows\System32\DriverStore\FileRepository\prnep001.inf_22b38952\Amd64\