McAfee, Inc. McAfee Total Protection DLL QCLite.dll

How to Repair QCLite.dll (Free Download)

Last Updated: 12/13/2023
[Average Read Time: 4.5 minutes]

The development of McAfee QuickClean by McAfee, Inc. prompted the latest creation of QCLite.dll. It is also known as a McAfee QuickClean DLL file (file extension DLL), which is classified as a type of Win64 DLL (Dynamic link library) file.

The first release in the Windows 10 Operating System for QCLite.dll was on 08/29/2019 inside McAfee Total Protection 2019 (16.0 R20). This file marks the latest update from McAfee, Inc., according to our records.

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

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	QCLite.dll
File Extension:	DLL file extension
Description:	McAfee QuickClean DLL
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 QuickClean
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:	0x841b8
Code Size:	778240

View Other QCLite.dll Information

File Info	Description
File Size:	1242 kB
File Modification Date/Time:	2020:01:13 14:08:30+00:00
File Type:	Win64 DLL
MIME Type:	application/octet-stream
Machine Type:	AMD AMD64
Time Stamp:	2019:06:12 03:16:13+00:00
PE Type:	PE32+
Linker Version:	14.0
Code Size:	778240
Initialized Data Size:	485888
Uninitialized Data Size:	0
Entry Point:	0x841b8
OS Version:	6.0
Image Version:	0.0
Subsystem Version:	6.0
Subsystem:	Windows GUI
File Version Number:	18.0.127.0
Product Version Number:	18.0.0.0
File Flags Mask:	0x0017
File Flags:	(none)
File OS:	Win32
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	McAfee, LLC.
File Description:	McAfee QuickClean DLL
File Version:	18,0,127,0
Internal Name:	QCLite
Legal Copyright:	Copyright © 2019 McAfee, LLC.
Product Name:	McAfee QuickClean
Product Version:	18,0,0,0

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

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What are QCLite.dll Error Messages?

Dynamic Link Library QCLite.dll Errors

QCLite.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like QCLite.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 QCLite.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 QCLite.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 QCLite.dll errors include:

Access Violation at address - QCLite.dll.
QCLite.dll could not be found.
Cannot find C:\Program Files\McAfee\MQS\QCLite.dll.
Cannot register QCLite.dll.
Cannot start McAfee Total Protection. A required component is missing: QCLite.dll. Please install McAfee Total Protection again.
Failed to load QCLite.dll.
The application has failed to start because QCLite.dll was not found.
The file QCLite.dll is missing or corrupt.
This application failed to start because QCLite.dll was not found. Re-installing the application may fix this problem.

Your QCLite.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, QCLite.dll file corruption could be caused from a power outage when loading McAfee Total Protection, system crash while loading QCLite.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 QCLite.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 QCLite.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 QCLite.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):

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 McAfee Total Protection 2019 (16.0 R20) and click "Uninstall"
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 QCLite.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 QCLite.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 QCLite.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 QCLite.dll file version. We maintain a comprehensive database of 100% malware-free QCLite.dll files for every applicable version of McAfee Total Protection. Please follow the steps below to download and properly replace you file:

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

Windows 10: C:\Program Files\McAfee\MQS\
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 QCLite.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 QCLite.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying QCLite.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 QCLite.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.

McAfee Total Protection 2019 (16.0 R20)

McAfee Total Protection 2019 (16.0 R20)

File Name

Software Version

File Version

Architecture

QCLite.dll

18.0.0.0

18,0,127,0

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	McAfee QuickClean
Software Version:	18.0.0.0
File Version:	18,0,127,0
File Size:	1271600
File Date:	01/13/2020
MD5 Checksum:	ee13cc36f0b28e562a34c4a6ac44c8b0
SHA1 Checksum:	7a121eb76d5ba2669b092f243833e393bc848550
SHA256 Checksum:	7e2d8bf235e5e143f5eaed7da0a212344e9bed3d8df30fdc5c64cddc979b5462
CRC32:
File Directory Location:	C:\Program Files\McAfee\MQS\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	0.0
Initialized Data Size:	485888
Linker Version:	14.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	6.0
File Modification Date/Time:	01/13/2020

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Files Related to QCLite.dll

DLL Files Related to QCLite.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
mvsoem.dll	McAfee VirusScan OEM Version Identifier	McAfee VirusScan API (20.1.0.0)	13272	C:\Windows\System32\LogFiles\WMI\
Qt5QuickTemplates2.dll	C++ Application Development Framework	Qt5 (5.11.1.0)	784744	C:\Users\Tester\AppData\Local\Microsoft\Windows\
mfehidk_messages.dll	McAfee Link Driver	SYSCORE (19.5.0.162)	85160	C:\Windows\System32\sru\
libeay32.dll	OpenSSL Shared Library	The OpenSSL Toolkit (1.0.2s)	1306984	C:\Users\Tester\AppData\Local\Packages\Microsof...
McVulRes.dll	McAfee Vulnerability Scanner	McAfee Vulnerability Scanner (8,0,105,0)	487952	C:\Windows\System32\LogFiles\WMI\

Other Files Related to QCLite.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
CBS.log	Log	McAfee Total Protection 2019 (16.0 R20)	985052	C:\Windows\Logs\CBS\
setuperr.log	Log	McAfee Total Protection 2019 (16.0 R20)	23531	C:\Windows\Logs\DPX\
setupact.log	Log	McAfee Total Protection 2019 (16.0 R20)	217108	C:\Windows\Logs\DPX\
setupact.log	Log	McAfee Total Protection 2019 (16.0 R20)	16387	C:\Windows\System32\Sysprep\Panther\
setupapi.dev.log	Log	McAfee Total Protection 2019 (16.0 R20)	684126	C:\Windows\inf\

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