Leptonlib.dll: How to Fix DLL Errors, Download, and Update

Last Updated: 12/01/2023
[Reading Time Required: 3.5 minutes]

The development of 123 PDF Converter 4.1 by 123 pdf converter prompted the latest creation of leptonlib.dll. It is also known as a Dynamic Link Library file (file extension DLL), which is classified as a type of Win32 DLL (Dynamic Link Library) file.

The first version of leptonlib.dll was released for the Windows 10 Operating System on 10/27/2010 inside 123 PDF Converter 4.1. This file marks the latest update from 123 pdf converter, according to our records.

Continue reading below to discover detailed file information, DLL file troubleshooting, and free downloads of several versions of leptonlib.dll.

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File Overview


General Information
File Name: leptonlib.dll
File Extension: DLL file extension
File Type: Dynamic Link Library
Description: Dynamic Link Library
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Program: 123 PDF Converter 4.1
Developer: 123 pdf converter
Software: 123 PDF Converter
Software Version: 4.1
File Details
Entry Point: 0xde81b
Code Size: 909312


What are leptonlib.dll Error Messages?


Dynamic Link Library leptonlib.dll Errors

leptonlib.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like leptonlib.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. 123 PDF Converter) could share the same leptonlib.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 leptonlib.dll is attempted to be loaded either when 123 PDF Converter is starting up, or in some cases already running. Some of the most common leptonlib.dll errors include:

Your leptonlib.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with 123 PDF Converter), or deleted by a malware infection. Furthermore, leptonlib.dll file corruption could be caused from a power outage when loading 123 PDF Converter, system crash while loading leptonlib.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 leptonlib.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 leptonlib.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 leptonlib.dll error, please proceed to the Step 2 below.

Step 2: If recently installed 123 PDF Converter (or related software), uninstall then try reinstalling 123 PDF Converter software.

You can uninstall 123 PDF Converter 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 123 PDF Converter 4.1 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall 123 PDF Converter software.

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

123 PDF Converter 4.1

123 pdf converter

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 leptonlib.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 leptonlib.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 leptonlib.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 leptonlib.dll file version. We maintain a comprehensive database of 100% malware-free leptonlib.dll files for every applicable version of 123 PDF Converter. 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 leptonlib.dll Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate 123 PDF Converter folder location:
    Windows 10: C:\ProgramData\PCOCRTemp\
  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 leptonlib.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 leptonlib.dll Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying leptonlib.dll to your appropriate Windows system directory. 123 pdf converter typically does not release 123 PDF Converter 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 leptonlib.dll and all other DLL files for 123 PDF Converter. 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


Files Related to leptonlib.dll


DLL Files Related to leptonlib.dll

File Name Description Software Program (Version) File Size (bytes) File Location
api-ms-win-core-handle... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\WINDOWS\Tasks\
qjpeg.dll C++ Application Development Framework Qt5 (5.11.1.0) 306232 C:\Users\Tester\AppData\Local\
ipcfile.dll Microsoft Active Directory Rights Management Services File API Microsoft AD RMS (1.0.3557.0524) 348520 C:\Users\Tester\AppData\Local\
System.Management.ni.dll Dynamic Link Library 123 PDF Converter 4.1 1482752 C:\Program Files (x86)\Common Files\microsoft s...
System.Drawing.ni.dll Dynamic Link Library 123 PDF Converter 4.1 2320384 C:\Program Files\Common Files\microsoft shared\...

Other Files Related to leptonlib.dll

File Name Description Software Program (Version) File Size (bytes) File Location
setupact.log Log 123 PDF Converter 4.1 62521 C:\Windows\Panther\UnattendGC\
setupact.log Log 123 PDF Converter 4.1 21877 C:\Windows\System32\Sysprep\Panther\
WmiApRpl.h C/C++/Objective-C Header 123 PDF Converter 4.1 3444 C:\Windows\System32\wbem\Performance\
api-ms-win-core-debug-... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
OBJECTS.DATA Analysis Studio Offline Data 123 PDF Converter 4.1 23994368 C:\Windows\System32\wbem\Repository\


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