CEFReg.exe EXE Errors: Download and Troubleshoot

Last Updated: 11/24/2023
[Average Read Time: 4.5 minutes]

The development of McAfee CEF by McAfee, Inc. prompted the latest creation of CEFReg.exe. It is also known as a McAfee CEF Registration file (file extension EXE), which is classified as a type of Win64 EXE (Executable application) file.

The initial introduction of CEFReg.exe released in McAfee Total Protection 2019 (16.0 R20) was for Windows 10 on 08/29/2019. According to our records, this is the primary and most recent file release from McAfee, Inc..

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

File Analysis Provided by Jason Geater (Author)

Recommended Download: Fix CEFReg.exe / McAfee Total Protection-related registry issues with WinThruster.

Compatible with Windows 11, 10, 8, 7, Vista, XP and 2000

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File Overview

General Information
File Name: CEFReg.exe
File Extension: EXE file extension
Description: McAfee CEF Registration
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: McAfee, Inc.
Software Program: McAfee CEF
Legal Copyright: Copyright © 2018 McAfee, Inc.
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x26e34
Code Size: 345600

What are CEFReg.exe Error Messages?

CEFReg.exe Runtime Errors

Runtime errors are McAfee Total Protection errors that occur during "runtime". Runtime is pretty self-explanatory; it means that these EXE errors are triggered when CEFReg.exe is attempted to be loaded either when McAfee Total Protection is starting up, or in some cases already running. Runtime errors are the most common form of EXE error you will encounter using McAfee Total Protection.

In most cases, CEFReg.exe runtime errors occurring while the program is running will result in the program terminating abnormally. Most of these CEFReg.exe error messages mean that McAfee Total Protection was either unable to locate this file on startup, or the file is corrupt, resulting in a prematurely-aborted startup process. Generally, McAfee Total Protection will be unable to start without resolving these errors.

Some of the most common CEFReg.exe errors include:

  • CEFReg.exe - Bad Image.
  • CEFReg.exe Application Error.
  • CEFReg.exe could not be found.
  • CEFReg.exe could not be installed.
  • CEFReg.exe could not be launched. Class not registered.
  • CEFReg.exe could not be started.
  • CEFReg.exe failed to initialize properly.
  • CEFReg.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
  • CEFReg.exe is not a valid Win32 application.
  • CEFReg.exe is not running.
  • Cannot find CEFReg.exe.
  • Error starting program: CEFReg.exe.
  • Faulting Application Path: CEFReg.exe.
  • The file CEFReg.exe is missing or corrupt.
  • Windows failed to start - CEFReg.exe.
System Error

The program can’t start because CEFReg.exe is missing from your computer. Try reinstalling the program to fix this problem.

Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

Finding the source of the CEFReg.exe error is key to properly resolving these errors. Although most of these EXE errors affecting CEFReg.exe will happen during startup, occasionally you will encounter a runtime error while using McAfee CEF. This can occur due to poor programming on behalf of McAfee, Inc., conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of CEFReg.exe errors can occur if it has been accidentally moved, deleted, or corrupted by a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix CEFReg.exe 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 CEFReg.exe 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 CEFReg.exe error, please proceed to the Step 2 below.

Step 2: If recently installed McAfee Total Protection (or related software), uninstall then try reinstalling McAfee Total Protection software.

You can uninstall McAfee Total Protection 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 McAfee Total Protection 2019 (16.0 R20) and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall McAfee Total Protection software.

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

McAfee Total Protection 2019 (16.0 R20)

McAfee, 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 CEFReg.exe 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 CEFReg.exe 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 CEFReg.exe 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 CEFReg.exe file version. We maintain a comprehensive database of 100% malware-free CEFReg.exe files for every applicable version of McAfee Total Protection. 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 CEFReg.exe Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate McAfee Total Protection folder location:
    Windows 10: C:\Program Files\Common Files\McAfee\CEF\
  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 CEFReg.exe 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 CEFReg.exe Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying CEFReg.exe to your appropriate Windows system directory. McAfee, Inc. typically does not release McAfee Total Protection EXE 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 CEFReg.exe and all other EXE files for McAfee Total Protection. An incorrectly installed EXE 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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SmtMsgLauncher.exe McAfee NextGen Message Router McAfee NextGen Message Router (3,1,0,0) 486016 C:\Windows\System32\LogFiles\WMI\
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Other Files Related to CEFReg.exe

File Name Description Software Program (Version) File Size (bytes) File Location
win.ini Windows Initialization McAfee Total Protection 2019 (16.0 R20) 124 C:\Windows\
WmiApRpl.h C/C++/Objective-C Header McAfee Total Protection 2019 (16.0 R20) 3444 C:\Windows\System32\wbem\Performance\
diagwrn.xml Extensible Markup Language McAfee Total Protection 2019 (16.0 R20) 44683 C:\Windows\Panther\UnattendGC\
diagerr.xml Extensible Markup Language McAfee Total Protection 2019 (16.0 R20) 5718 C:\Windows\System32\Sysprep\Panther\
api-ms-win-core-memory... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11624 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...


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