What are avutil-55.dll Error Messages?

Dynamic Link Library avutil-55.dll Errors

avutil-55.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like avutil-55.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like FileCoAuth.exe - to follow. These files were created so that multiple programs (eg. Wise Video Converter) could share the same avutil-55.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 avutil-55.dll is attempted to be loaded either when Wise Video Converter is starting up, or in some cases already running. Some of the most common avutil-55.dll errors include:

• Access Violation at address - avutil-55.dll.
• avutil-55.dll could not be found.
• Cannot find C:\Program Files (x86)\Wise\Wise Video Converter\LibAV\avutil-55.dll.
• Cannot register avutil-55.dll.
• Cannot start Wise Video Converter. A required component is missing: avutil-55.dll. Please install Wise Video Converter again.
• Failed to load avutil-55.dll.
• The application has failed to start because avutil-55.dll was not found.
• The file avutil-55.dll is missing or corrupt.
• This application failed to start because avutil-55.dll was not found. Re-installing the application may fix this problem.

Your avutil-55.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Wise Video Converter), or deleted by a malware infection. Furthermore, avutil-55.dll file corruption could be caused from a power outage when loading Wise Video Converter, system crash while loading avutil-55.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 avutil-55.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 avutil-55.dll issue. These troubleshooting steps are listed in the recommended order of execution.

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 avutil-55.dll error, please proceed to the Step 2 below.

You can uninstall Wise Video 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 Wise Video Converter 2.3.1.65 and click "Uninstall"
5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Wise Video Converter software.

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

Wise Video Converter 2.3.1.65

WiseCleaner

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many avutil-55.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 avutil-55.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 avutil-55.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 avutil-55.dll file version. We maintain a comprehensive database of 100% malware-free avutil-55.dll files for every applicable version of Wise Video 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 avutil-55.dll Files".
2. Click the appropriate "Download Now" button and download your Windows file version.
3. Copy this file to the appropriate Wise Video Converter folder location:
   
   Windows 10: C:\Program Files (x86)\Kotato\FLV Downloader Pro\Modules\
   Windows 10: C:\Program Files\Youtube Movie Maker\
   Windows 10: C:\Program Files (x86)\DVDFab Media Player 3\
   Windows 10: C:\Program Files (x86)\WonderFox Soft\HD Video Converter Factory\Data\
   Windows 10: C:\Program Files (x86)\Blender Foundation\Blender\
   Show 23 more directories +

   Windows 10: C:\Program Files (x86)\Karaoke5\
   Windows 10: C:\Program Files (x86)\Common Files\Solveig Multimedia\
   Windows 10: C:\Program Files (x86)\R-Undelete\
   Windows 10: C:\Program Files (x86)\ManyCam\
   Windows 10: C:\Program Files (x86)\R-Studio\
   Windows 10: C:\Program Files\Reallusion\CrazyTalk 8\Bin64\
   Windows 10: C:\Program Files (x86)\Program4Pc\Photo Editor\
   Windows 10: C:\Program Files (x86)\Nero\Nero D2D\FFmpeg\
   Windows 10: C:\Program Files (x86)\Nero\Nero Platinum\Nero Burning ROM\FFmpeg\
   Windows 10: C:\Program Files (x86)\Nero\Nero Platinum\Nero MediaHome\FFmpeg\
   Windows 10: C:\Program Files (x86)\Nero\Nero Platinum\Nero Recode\FFmpeg\
   Windows 10: C:\Program Files (x86)\Nero\Nero Platinum\Nero Vision\FFmpeg\
   Windows 10: C:\Program Files (x86)\YTD\YTD\Components\
   Windows 10: C:\Program Files (x86)\Nero\Nero 2020\Nero Burning ROM\FFmpeg\
   Windows 10: C:\Program Files (x86)\Nero\Nero 2019\Nero MediaHome\FFmpeg\
   Windows 10: C:\Program Files (x86)\DivX\DivX Media Server\
   Windows 10: C:\Program Files (x86)\Kotato\FLV Downloader\Modules\
   Windows 10: C:\Program Files\EaseUS\EaseUS Data Recovery Wizard\VideoViewer\
   Windows 10: C:\Program Files\FreeDownloadManager.ORG\Free Download Manager\
   Windows 10: C:\Program Files (x86)\Wise\Wise Video Converter\LibAV\
   Windows 10: C:\Program Files\Google\Google Earth Pro\client\
   Windows 10: C:\Program Files (x86)\Image-Line\Shared\ffmpeg\x64\
   Windows 10: C:\Program Files (x86)\Image-Line\Shared\ffmpeg\x32\
   
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.

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