Fixing DLL Errors: MpfAltPS.dll Download and Repair

Last Updated: 11/29/2023
[Time Required for Reading: 3.5 minutes]

MpfAltPS.dll uses the DLL file extension, which is more specifically known as a McAfee Personal Firewall Alerter Proxy/Stub file. It is classified as a Win64 DLL (Dynamic link library) file, created for McAfee Personal Firewall by McAfee, Inc..

The first version of MpfAltPS.dll for McAfee Total Protection 2019 (16.0 R20) was seen on 08/29/2019 in Windows 10. This file version is latest update offered from McAfee, Inc., according to our records.

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

File Analysis Provided by Jason Geater (Author)


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File Overview


General Information
File Name: MpfAltPS.dll
File Extension: DLL file extension
Description: McAfee Personal Firewall Alerter Proxy/Stub
Object File Type: Dynamic link library
File Operating System: Win32
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: McAfee, LLC.
Software Program: McAfee Personal Firewall
Legal Copyright: Copyright © 2019 McAfee, LLC.
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x0017
Entry Point: 0x1530
Code Size: 40960


What are MpfAltPS.dll Error Messages?


Dynamic Link Library MpfAltPS.dll Errors

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

Your MpfAltPS.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with McAfee Total Protection), or deleted by a malware infection. Furthermore, MpfAltPS.dll file corruption could be caused from a power outage when loading McAfee Total Protection, system crash while loading MpfAltPS.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 MpfAltPS.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 MpfAltPS.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 MpfAltPS.dll 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 MpfAltPS.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 MpfAltPS.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 MpfAltPS.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 MpfAltPS.dll file version. We maintain a comprehensive database of 100% malware-free MpfAltPS.dll 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 MpfAltPS.dll 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\McAfee\MPF\
  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 MpfAltPS.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 MpfAltPS.dll Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying MpfAltPS.dll to your appropriate Windows system directory. McAfee, Inc. typically does not release McAfee Total Protection 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 MpfAltPS.dll and all other DLL files for McAfee Total Protection. 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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DLL Files Related to MpfAltPS.dll

File Name Description Software Program (Version) File Size (bytes) File Location
mcvsocfg.dll McAfee VirusScan Configuration McAfee Cloud AV (22,5,0,0) 1114040 C:\Windows\System32\LogFiles\WMI\
MessageVaultModule.dll McAfee NextGen Message Vault McAfee NextGen Message Vault (4,0,0,0) 3785400 C:\Windows\System32\sru\
api-ms-win-crt-time-l1... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 13672 C:\Users\Tester\AppData\Local\
api-ms-win-crt-convert... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 15208 C:\Users\Tester\AppData\Local\
api-ms-win-core-file-l... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 14696 C:\Windows\inf\

Other Files Related to MpfAltPS.dll

File Name Description Software Program (Version) File Size (bytes) File Location
setuperr.log Log McAfee Total Protection 2019 (16.0 R20) 5179 C:\Windows\Panther\NewOs\Panther\
WmiApRpl.ini Windows Initialization McAfee Total Protection 2019 (16.0 R20) 29736 C:\Windows\inf\WmiApRpl\0009\
api-ms-win-core-heap-l... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
api-ms-win-core-sysinf... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 12136 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
diagwrn.xml Extensible Markup Language McAfee Total Protection 2019 (16.0 R20) 5718 C:\Windows\System32\Sysprep\Panther\


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