Fixing Nusb3co.dll DLL Issues - How to Download and Repair

Last Updated: 11/29/2023
[Time Needed for Reading: ~4-6 minutes]

USB 3.0 Host Controller Advanced Program files such as nusb3co.dll utilize the DLL file extension. This file is considered a Win32 DLL (Dynamic link library) file, and was first created by EaseUS for the USB 3.0 Device Driver software package.

The first version of nusb3co.dll was released for the Windows 10 Operating System on 08/16/2018 inside EaseUS Todo Backup 11.5. The most recent version [file version 2.1.18.0 (nusb3drv.060311-0907)] was introduced on 05/03/2018 for EaseUS Disk Copy 3.

In this short article, you will discover detailed file information, steps for troubleshooting DLL file problems with nusb3co.dll, and list of free downloads for every version that exists in our comprehensive file directory.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	nusb3co.dll
File Extension:	DLL file extension
Description:	USB 3.0 Host Controller Advanced Program
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:	Renesas Electronics Corporation
Software Program:	USB 3.0 Device Driver
Legal Copyright:	(C) 2010-2011 Renesas Electronics Corporation

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	Private build
File Flags Mask:	0x003f
Entry Point:	0x388b
Code Size:	67072

View Other nusb3co.dll Information

File Info	Description
File Size:	86 kB
File Modification Date/Time:	2019:11:15 17:43:49+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	2011:06:03 02:51:43+00:00
PE Type:	PE32
Linker Version:	9.0
Code Size:	67072
Initialized Data Size:	18944
Uninitialized Data Size:	0
Entry Point:	0x388b
OS Version:	6.1
Image Version:	6.1
Subsystem Version:	5.1
Subsystem:	Windows GUI
File Version Number:	2.1.18.0
Product Version Number:	2.1.18.0
File Flags Mask:	0x003f
File Flags:	Private build
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Renesas Electronics Corporation
File Description:	USB 3.0 Host Controller Advanced Program
File Version:	2.1.18.0 (nusb3drv.060311-0907)
Internal Name:	nusb3co.dll
Legal Copyright:	(C) 2010-2011 Renesas Electronics Corporation
Product Name:	USB 3.0 Device Driver
Product Version:	2.1.18.0

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are nusb3co.dll Error Messages?

Dynamic Link Library nusb3co.dll Errors

nusb3co.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like nusb3co.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like iscsicli.exe - to follow. These files were created so that multiple programs (eg. EaseUS Disk Copy) could share the same nusb3co.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 nusb3co.dll is attempted to be loaded either when EaseUS Disk Copy is starting up, or in some cases already running. Some of the most common nusb3co.dll errors include:

Access Violation at address - nusb3co.dll.
nusb3co.dll could not be found.
Cannot find C:\Program Files (x86)\EaseUS\Disk Copy\BUILDPE\x86\Drivers\USB\NEC\nusb3co.dll.
Cannot register nusb3co.dll.
Cannot start EaseUS Disk Copy. A required component is missing: nusb3co.dll. Please install EaseUS Disk Copy again.
Failed to load nusb3co.dll.
The application has failed to start because nusb3co.dll was not found.
The file nusb3co.dll is missing or corrupt.
This application failed to start because nusb3co.dll was not found. Re-installing the application may fix this problem.

Your nusb3co.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with EaseUS Disk Copy), or deleted by a malware infection. Furthermore, nusb3co.dll file corruption could be caused from a power outage when loading EaseUS Disk Copy, system crash while loading nusb3co.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.

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How to Fix nusb3co.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 nusb3co.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):

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

If the Step 1 fails to resolve the nusb3co.dll error, please proceed to the Step 2 below.

Step 2: If recently installed EaseUS Disk Copy (or related software), uninstall then try reinstalling EaseUS Disk Copy software.

You can uninstall EaseUS Disk Copy software by following these instructions (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "Uninstall" and press "ENTER".
In the search results, find and click "Add or Remove Programs"
Find the entry for EaseUS Disk Copy 3 and click "Uninstall"
Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall EaseUS Disk Copy software.

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

EaseUS Disk Copy 3

EaseUS

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 nusb3co.dll error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

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

If Windows Update failed to resolve the nusb3co.dll error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your nusb3co.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 nusb3co.dll file version. We maintain a comprehensive database of 100% malware-free nusb3co.dll files for every applicable version of EaseUS Disk Copy. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download nusb3co.dll Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy this file to the appropriate EaseUS Disk Copy folder location:

Windows 10: C:\Program Files (x86)\EaseUS\Disk Copy\BUILDPE\x86\Drivers\USB\NEC\
Windows 10: C:\Program Files (x86)\EaseUS\Todo Backup\BUILDPE\x86\Drivers\USB\NEC\
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 nusb3co.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.

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Download nusb3co.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying nusb3co.dll to your appropriate Windows system directory. EaseUS typically does not release EaseUS Disk Copy 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 nusb3co.dll and all other DLL files for EaseUS Disk Copy. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

EaseUS Disk Copy 3

File Name

Software Version

File Version

Architecture

nusb3co.dll

2.1.18.0

2.1.18.0 (nusb3drv.060311-0907)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	USB 3.0 Device Driver
Software Version:	2.1.18.0
File Version:	2.1.18.0 (nusb3drv.060311-0907)
File Size:	88424
File Date:	11/15/2019
MD5 Checksum:	a4850fd78fe83b440cef5bdb288131f9
SHA1 Checksum:	5f53dcc7c1321cb953e2be04e4fb3ec3de5d0927
SHA256 Checksum:	b447f18e6204a5a2300a94c39100abeaa5999231dc82a8adafd0fe212f9f3bb5
CRC32:
File Directory Location:	C:\Program Files (x86)\EaseUS\Disk Copy\BUILDP ...

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.1
Initialized Data Size:	18944
Linker Version:	9.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	5.1
File Modification Date/Time:	11/15/2019

EaseUS Todo Backup 11.5

File Name

Software Version

File Version

Architecture

nusb3co.dll

2.1.18.0

2.1.18.0 (nusb3drv.060311-0907)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	USB 3.0 Device Driver
Software Version:	2.1.18.0
File Version:	2.1.18.0 (nusb3drv.060311-0907)
File Size:	88424
File Date:	11/15/2019
MD5 Checksum:	a4850fd78fe83b440cef5bdb288131f9
SHA1 Checksum:	5f53dcc7c1321cb953e2be04e4fb3ec3de5d0927
SHA256 Checksum:	b447f18e6204a5a2300a94c39100abeaa5999231dc82a8adafd0fe212f9f3bb5
CRC32:
File Directory Location:	C:\Program Files (x86)\EaseUS\Todo Backup\BUIL ...

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.1
Initialized Data Size:	18944
Linker Version:	9.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	5.1
File Modification Date/Time:	11/15/2019

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DLL Files Related to nusb3co.dll

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libxml2-2.dll	Dynamic Link Library	EaseUS Disk Copy 3	1740678	C:\Windows\System32\winevt\Logs\
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qwebp.dll	C++ application development framework.	Qt5 (5.6.2.0)	375296	C:\Windows\ServiceProfiles\NetworkService\AppDa...

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