Download, Fix, and Update CuIEPlg.dll

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

Internet Explorer Cleanup Engine Plugin files such as cuIEPlg.dll utilize the DLL file extension. This file is considered a Win32 DLL (Executable application) file, and was first created by Symantec Corporation for the Tuneup software package.

The first release in the Windows 10 Operating System for cuIEPlg.dll was on 04/26/2016 inside Norton Security Premium 22.6.0.142. This file release marks the latest and most updated version from Symantec Corporation.

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

File Analysis Provided by Jason Geater (Author)


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File Overview


General Information
File Name: cuIEPlg.dll
File Extension: DLL file extension
Description: Internet Explorer Cleanup Engine Plugin
Object File Type: Executable application
File Operating System: Windows NT 32-bit
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: Symantec Corporation
Software Program: Tuneup
Legal Copyright: Copyright (c) 2016 Symantec Corporation. All rights reserved.
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x13eeb
Code Size: 84480


What are cuIEPlg.dll Error Messages?


Dynamic Link Library cuIEPlg.dll Errors

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

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

Step 2: If recently installed Norton Security Premium (or related software), uninstall then try reinstalling Norton Security Premium software.

You can uninstall Norton Security Premium 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 Norton Security Premium 22.6.0.142 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Norton Security Premium software.

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

Norton Security Premium 22.6.0.142

Symantec Corporation

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 cuIEPlg.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 cuIEPlg.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 cuIEPlg.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 cuIEPlg.dll file version. We maintain a comprehensive database of 100% malware-free cuIEPlg.dll files for every applicable version of Norton Security Premium. 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 cuIEPlg.dll Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Norton Security Premium folder location:
    Windows 10: C:\Program Files (x86)\Norton Security with Backup\Engine\22.6.0.142\
  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 cuIEPlg.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 cuIEPlg.dll Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying cuIEPlg.dll to your appropriate Windows system directory. Symantec Corporation typically does not release Norton Security Premium 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 cuIEPlg.dll and all other DLL files for Norton Security Premium. 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


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File Name Description Software Program (Version) File Size (bytes) File Location
System.Xml.ni.dll Dynamic Link Library Norton Security Premium 22.6.0.142 6968320 C:\Program Files (x86)\Microsoft Office\root\vf...
diFVal.dll InstallToolBox File Validation Norton Security with Backup (22.6.0.142) 19128 C:\Program Files\WindowsApps\Microsoft.StorePur...
muis.dll Shortcut MUI Resource Norton Security (22.6) 17080 C:\Program Files\WindowsApps\Deleted\Microsoft....
buUI.dll Backup UI Backup (10.1) 858808 C:\Program Files\WindowsApps\Microsoft.ZuneVide...
diFVal.dll InstallToolBox File Validation Norton Security with Backup (22.6.0.142) 17080 C:\Program Files\WindowsApps\Microsoft.StorePur...

Other Files Related to cuIEPlg.dll

File Name Description Software Program (Version) File Size (bytes) File Location
setupact.log Log Norton Security Premium 22.6.0.142 177264 C:\Windows\Logs\DPX\
setupact.log Log Norton Security Premium 22.6.0.142 24317 C:\Windows\System32\Sysprep\Panther\
setupapi.dev.log Log Norton Security Premium 22.6.0.142 684126 C:\Windows\inf\
WmiApRpl.ini Windows Initialization Norton Security Premium 22.6.0.142 29736 C:\Windows\inf\WmiApRpl\0009\
diagwrn.xml Extensible Markup Language Norton Security Premium 22.6.0.142 5718 C:\Windows\System32\Sysprep\Panther\


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