3 Steps to Download and Fix Dllonglw.dll DLL Errors

Last Updated: 12/04/2023
[Time to Read Article: 5 minutes]

The development of Heidi® by Autodesk, Inc. prompted the latest creation of dllonglw.dll. It is also known as a Heidi® Display List file (file extension DLL), which is classified as a type of Win32 DLL (Dynamic link library) file.

The first version of dllonglw.dll was released for the Windows 10 Operating System on 06/12/2007 inside Autodesk DWF Viewer 7. This file version is latest update offered from Autodesk, Inc., according to our records.

Below, you find comprehensive file information, instructions for simple DLL file troubleshooting, and list of free dllonglw.dll downloads for each available file version.

File Analysis Provided by Jason Geater (Author)


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File Overview


General Information
File Name: dllonglw.dll
File Extension: DLL file extension
Description: Heidi® Display List
Object File Type: Dynamic link library
File Operating System: Windows NT 32-bit
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: Autodesk, Inc.
Software Program: Heidi®
Legal Copyright: Copyright © 1996-1999 Autodesk, Inc.
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x11bb6
Code Size: 73728


What are dllonglw.dll Error Messages?


Dynamic Link Library dllonglw.dll Errors

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

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

Step 2: If recently installed Autodesk DWF Viewer (or related software), uninstall then try reinstalling Autodesk DWF Viewer software.

You can uninstall Autodesk DWF Viewer 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 Autodesk DWF Viewer 7 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Autodesk DWF Viewer software.

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

Autodesk DWF Viewer 7

Autodesk, 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 dllonglw.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 dllonglw.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 dllonglw.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 dllonglw.dll file version. We maintain a comprehensive database of 100% malware-free dllonglw.dll files for every applicable version of Autodesk DWF Viewer. 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 dllonglw.dll Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Autodesk DWF Viewer folder location:
    Windows 10: C:\Program Files (x86)\Autodesk\Autodesk DWF Viewer\EMap\
    Windows 10: C:\Program Files (x86)\Autodesk\Autodesk DWF Viewer\EComposite\
  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 dllonglw.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 dllonglw.dll Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying dllonglw.dll to your appropriate Windows system directory. Autodesk, Inc. typically does not release Autodesk DWF Viewer 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 dllonglw.dll and all other DLL files for Autodesk DWF Viewer. 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 dllonglw.dll


DLL Files Related to dllonglw.dll

File Name Description Software Program (Version) File Size (bytes) File Location
FileSyncApi64.dll Microsoft OneDrive File Information Provider Extension Microsoft OneDrive (19.192.0926.0012) 1286712 C:\Users\Tester\AppData\Local\
api-ms-win-core-util-l... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\Windows\inf\
Qt5DBus.dll C++ Application Development Framework Qt5 (5.11.1.0) 349032 C:\Users\Tester\AppData\Local\Microsoft\Windows\
DwfSelection.dll Autodesk DwfSelection Module Autodesk DWF Viewer (7.0.0.928) 73328 C:\Windows\Prefetch\
EModelViewerRes.dll EModelViewer Resources Autodesk DWF Viewer (7.0.0.928) 119920 C:\Windows\Prefetch\

Other Files Related to dllonglw.dll

File Name Description Software Program (Version) File Size (bytes) File Location
setupact.log Log AutoCAD 2019 15167 C:\Windows\System32\Sysprep\Panther\
setupact.log Log Autodesk DWF Viewer 7 62830 C:\Windows\Panther\UnattendGC\
setupact.log Log Autodesk DWF Viewer 7 24622 C:\Windows\System32\Sysprep\Panther\
SA.DAT Game Data DWG TrueView 2019 6 C:\WINDOWS\Tasks\
setupapi.dev.log Log Autodesk DWF Viewer 7 684169 C:\Windows\inf\


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