Troubleshoot Cnpactoc.dll Issues (Free Download)

Last Updated: 12/06/2023
[Time to Read Article: 5 minutes]

cnpactoc.dll uses the DLL file extension, which is more specifically known as a ct_ocr file. It is classified as a Win32 DLL (Static library) file, created for Rosetta Stone Engine by Canon Inc..

The initial introduction of cnpactoc.dll released in Canon MP Navigator 5.0.2 was for Windows 10 on 07/22/2015. This is not only most recent release from Canon Inc., but it's the only version known in existence.

In this short article, you will discover detailed file information, steps for troubleshooting DLL file problems with cnpactoc.dll, and list of free downloads for every version that exists in our comprehensive file directory.

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File Overview


General Information
File Name: cnpactoc.dll
File Extension: DLL file extension
Description: ct_ocr
Object File Type: Static library
File Operating System: Windows NT 32-bit
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: CANON INC.
Software Program: Rosetta Stone Engine
Legal Copyright: Copyright CANON INC. 1997-2007
File Details
Character Set: Unicode
Language Code: Japanese
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x4bf3e
Code Size: 348160


What are cnpactoc.dll Error Messages?


Dynamic Link Library cnpactoc.dll Errors

cnpactoc.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like cnpactoc.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like MpSigStub.exe - to follow. These files were created so that multiple programs (eg. Canon MP Navigator) could share the same cnpactoc.dll file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when cnpactoc.dll is attempted to be loaded either when Canon MP Navigator is starting up, or in some cases already running. Some of the most common cnpactoc.dll errors include:

Your cnpactoc.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Canon MP Navigator), or deleted by a malware infection. Furthermore, cnpactoc.dll file corruption could be caused from a power outage when loading Canon MP Navigator, system crash while loading cnpactoc.dll, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.



How to Fix cnpactoc.dll Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your cnpactoc.dll issue. These troubleshooting steps are listed in the recommended order of execution.


Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the cnpactoc.dll error, please proceed to the Step 2 below.

Step 2: If recently installed Canon MP Navigator (or related software), uninstall then try reinstalling Canon MP Navigator software.

You can uninstall Canon MP Navigator software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for Canon MP Navigator 5.0.2 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Canon MP Navigator software.

If this Step 2 fails as well, please proceed to the Step 3 below.

Canon MP Navigator 5.0.2

Canon Inc.

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many cnpactoc.dll error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the cnpactoc.dll error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.



If Those Steps Fail: Download and Replace Your cnpactoc.dll File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate cnpactoc.dll file version. We maintain a comprehensive database of 100% malware-free cnpactoc.dll files for every applicable version of Canon MP Navigator. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download cnpactoc.dll Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Canon MP Navigator folder location:
    Windows 10: C:\Program Files (x86)\Canon\MP Navigator EX 5.0\
  4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve cnpactoc.dll problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.



Download cnpactoc.dll Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying cnpactoc.dll to your appropriate Windows system directory. Canon Inc. typically does not release Canon MP Navigator DLL files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing cnpactoc.dll and all other DLL files for Canon MP Navigator. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10


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File Name Description Software Program (Version) File Size (bytes) File Location
Telemetry.dll Telemetry Library Microsoft OneDrive (19.222.1110.0006) 159080 C:\Windows\System32\en-US\
Qt5PrintSupport.dll C++ Application Development Framework Qt5 (5.11.1.0) 275816 C:\Users\Tester\AppData\Local\Microsoft\Windows\
Qt5QuickControls2.dll C++ Application Development Framework Qt5 (5.11.1.0) 153960 C:\Users\Tester\AppData\Local\Microsoft\Windows\
mpnclng.dll mpnclng MP Navigator EX Copy (3, 0, 0, 0) 36864 C:\Windows\System32\winevt\Logs\
pafcv2.dll pafcv2 Canon MP Navigator 5.0.2 1228800 C:\Windows\System32\winevt\Logs\

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File Name Description Software Program (Version) File Size (bytes) File Location
SA.DAT Game Data Canon Pixma MP250 1.04 6 C:\WINDOWS\Tasks\
SA.DAT Game Data Canon Utilities PhotoStitch 3.1.6.8 6 C:\WINDOWS\Tasks\
WmiApRpl.ini Windows Initialization Canon MP Navigator 5.0.2 29736 C:\Windows\inf\WmiApRpl\0009\
api-ms-win-core-heap-l... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
diagwrn.xml Extensible Markup Language Canon Utilities PhotoStitch 3.1.6.8 5718 C:\Windows\System32\Sysprep\Panther\


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