MCUI.dll File Information
  • DLL File Name:MCUI.dll
  • File Type:Win32 DLL
  • Product Name:Norton Internet Security
  • Developer:Symantec Corporation
  • File Version:
  • File Size:612.8KB (627504 bytes)
  • Language Code:English (U.S.)
  • Character Set:Unicode
  • MD5 Checksum:fb5a96b1287ac10183c37c4a26ebc2c9
  • Copyright:Copyright (c) 2013 Symantec Corporation. All rights reserved.

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MCUI.dll Errors and Solutions

Symantec Security History

The file MCUI.dll is a 32bit Windows DLL module for Norton Internet Security software or other related programs. The file is also referred as MCUI32.exe. The file and the associated Norton Internet Security software was developed by Symantec Corporation. The file was licensed as Copyright (c) 2013 Symantec Corporation. All rights reserved..

MCUI.dll file is a critical component for the software to work properly and without any dll error messages. You may receive an error message like the ones below that indicates the file is not found, damaged, or the wrong version.

  • This application failed to start because MCUI.dll was not found.
  • The file MCUI.dll is missing or corrupted.
  • A required component is missing: MCUI.dll. Please install the application again.
  • Error loading MCUI.dll. The specified module could not be found.
  • The program can't start because MCUI.dll is missing from your computer. Try reinstalling the program to fix this problem.

To fix the error, you need to copy the missing MCUI.dll file to your system or replace the corrupted dll file with a working one by following the instructions below. The current version of dll file available on our site is with a size of 612.8KB.

How to Install MCUI.dll

You can download MCUI.dll for free from the download section on this page. After you download the compressed file, unzip it to a convenient location on your computer. In order to fix dll related errors, you need to copy the .dll file to the installation folder of the application or game, or install .dll file directly to Windows (Windows XP, Vista, Windows 7, Windows 10).

Install DLL File to Program Folder

Copy the extracted MCUI.dll file to the installation folder of the application or game.

Check if the problem is solved. If the problem persists or you are not sure which software is having problems, install the .DLL file directly to Windows.

Register DLL File Using Microsoft Regsvr

Copy the file to "C:\Windows\System32\"

You can install the .dll file in both system folders without any problems. In order to complete this step, you must run the Command Prompt as administrator.

Open the Start Menu and before clicking anywhere, type "cmd" on your keyboard.

Right-click the "Command Prompt" search result and click the "Run as administrator" option.

Paste the following command into the Command Line window that opens up and press Enter key.

%windir%\System32\regsvr32.exe MCUI.dll

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Download MCUI.dll
Version OS Size Language Download 32bit 612.8KB English Download

Please note : This is a free download. No guarantees or warranties are given or implied. Please download and install the file at your own risk...

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