Download CNBJOPAU.DLL to Fix Errors

Sometimes Windows system displays error messages regarding corrupted or missing CNBJOPAU.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 CNBJOPAU.DLL file can therefore effect in failed execution of the started process.

CNBJOPAU.DLL file Canon Inkjet 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 CNBJOPAU.DLL related errors on your device. You can also download CNBJOPAU.DLL file compatible with Windows 10, Windows 8, Windows 8.1 devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8, Windows 8.1

File info

General information
File extension DLL
Description Canon Inkjet Printer Driver
Program Canon Inkjet Printer Driver
MIME type application/octet-stream
File type Driver
System Windows NT 32-bit
Copyrights Copyright CANON INC. 2013 All Rights Reserved
Character set Unicode
Language cod English (U.S.)

There are various types of errors related to CNBJOPAU.DLL file. CNBJOPAU.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 CNBJOPAU.DLL file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to CNBJOPAU.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 CNBJOPAU.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.

CNBJOPAU.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 CNBJOPAU.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 CNBJOPAU.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 CNBJOPAU.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 CNBJOPAU.DLL file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the CNBJOPAU.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 CNBJOPAU.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 CNBJOPAU.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 CNBJOPAU.DLL file

The last solution is to manually download and replace CNBJOPAU.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 CNBJOPAU.DLL file.

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

  • Windows 10: C:\Windows\System32\DriverStore\FileRepository\prncacla.inf_x86_31be8f38b03c2a57\I386\
  • Windows 8: 1: C:\Windows\System32\DriverStore\FileRepository\prncacla.inf_x86_256f8ce50f892a14\I386\
  • Windows 8.1: ---

If the steps did not solve your CNBJOPAU.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

System Windows 10
File size 27136 bytes
Date 2013-06-18
File details
MD5 cfea500df6b511b6d594dd92542d1225
SHA1 c81986e47171800302b90276aacefcdbd8447145
SHA256 eb3b82b13ef06213557c9bf30bf043b3452c376c7ffb5bc24bb29714f14c102b
CRC32 62c1c5d1
Example file location C:\Windows\System32\DriverStore\FileRepository\prncacla.inf_x86_31be8f38b03c2a57\I386\
System Windows 8
File size 74240 bytes
Date 2012-06-28
File details
MD5 ec17e386533b1b9841d2d4934e3f54aa
SHA1 f0e0d9b4e0f94b6831b711eef2030c6f21fb7e16
SHA256 fa83e5a5a5d160c4dc49a171a2660524074506d0c45525655da271501766aff4
CRC32 ada74056
Example file location 1: C:\Windows\System32\DriverStore\FileRepository\prncacla.inf_x86_256f8ce50f892a14\I386\
System Windows 8.1
File size 27136 bytes
Date 2013-06-18
File details
MD5 cfea500df6b511b6d594dd92542d1225
SHA1 c81986e47171800302b90276aacefcdbd8447145
SHA256 eb3b82b13ef06213557c9bf30bf043b3452c376c7ffb5bc24bb29714f14c102b
CRC32 62c1c5d1
Example file location ---