jnwmon.dll Informations - Download and Fix

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

jnwmon.dll file Windows Journal Port Monitor DLL. 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 jnwmon.dll related errors on your device. You can also download jnwmon.dll file compatible with Windows 8.1, Windows 8, Windows 7, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 8.1, Windows 8, Windows 7, Windows Vista

File info

General information
Filename jnwmon.dll
File extension DLL
Description Windows Journal Port Monitor DLL
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
MIME type application/octet-stream
File type Driver
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)

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

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



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


Problems related to jnwmon.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 jnwmon.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.

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

The last solution is to manually download and replace jnwmon.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 jnwmon.dll file.

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

  • Windows 8.1: C:\Windows\System32\
  • Windows 8: 1: C:\Windows\System32\
  • Windows 7: C:\Windows\System32\
  • Windows Vista: ---

If the steps did not solve your jnwmon.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 jnwmon.dll
System Windows 8.1
File size 20480 bytes
Date 2014-11-21
File details
MD5 5ce33b8007cdad032e3e081f5fd4c0cb
SHA1 85f11be347a8a184c76104d65d28a9232a035648
SHA256 d80e1b116b0798ca7496589fc25bc8350f3dbfb40b47ddaa3d17f6dad1d43f46
CRC32 a164e8de
Example file location C:\Windows\System32\
Filename jnwmon.dll
System Windows 8
File size 19968 bytes
Date 2012-07-26
File details
MD5 e7459cc03af526508537ed657a7c3860
SHA1 1091191484d44765440ede538a327c55f8e1289c
SHA256 b15b11c0863f8a34c40dc825b46d2c3519ce6a3e0671b120a524ca964aeb03e7
CRC32 a9d68a82
Example file location 1: C:\Windows\System32\
Filename jnwmon.dll
System Windows 7
File size 24576 bytes
Date 2009-07-14
File details
MD5 cbe9773848f6156b0e823966e834c961
SHA1 7203ebd0e9d835b8665f73f13dacefcf31f115b2
SHA256 57b428c9acd2196e72e179acf7c98b92067cd9dc5cc506d41213311283d6b67e
CRC32 fa0e7a0b
Example file location C:\Windows\System32\
Filename jnwmon.dll
System Windows Vista
File size 24576 bytes
Date 2006-11-02
File details
MD5 0d016681df4c55b87f44e8e2969a7427
SHA1 f338d3eaa007398fc82600cf330518c0a4529e68
SHA256 6c92e77129489c2fe3cc61f072a18815455b6098952a61c1436c85c72edec2b9
CRC32 27d71813
Example file location ---