How to Resolve AutoCAD's mfc140u.dll Error on Windows 10/11
The AutoCAD error "The application was unable to load a required component: mfc140u.dll" occurs because the reference file "mfc140u.dll" required to run the application is missing. This issue is typically linked to the absence of the Microsoft Visual C++ Redistributable Package, which provides essential runtime components for applications developed using Microsoft Visual Studio.
How to Fix: mfc140u.dll not found or missing in Windows 10/11
The "mfc140u.dll" is a Dynamic Link Library (DLL) file associated with applications developed with Microsoft Visual Studio 2015, 2017, or 2019. To rectify this issue, you need to install the appropriate Microsoft Visual C++ Redistributable Package. This package installs the runtime components of Visual C++ Libraries required for running applications developed with Visual Studio.
- Download the latest version of the Microsoft Visual C++ Redistributable Package from the Microsoft Visual C++ Redistributable latest supported downloads. Ensure to select the correct version corresponding to the Visual Studio version (2015, 2017, or 2019) your application was built with.
* Note: If you have a 64-bit version of Windows, it is crucial to download and install both the 32-bit and 64-bit versions of the Microsoft Visual C++ Redistributable packages. This ensures compatibility with both 32-bit and 64-bit applications.
Microsoft Visual C++ Redistributable Packages for Visual Studio 2019
- Download Visual C++ Redistributable for Visual Studio 2019 32-bit
- Download Visual C++ Redistributable for Visual Studio 2019 64-bit
Microsoft Visual C++ Redistributable Packages for Visual Studio 2017
- Download Visual C++ Redistributable for Visual Studio 2017 32-bit
- Download Visual C++ Redistributable for Visual Studio 2017 64-bit
Microsoft Visual C++ Redistributable Packages for Visual Studio 2015
- After downloading, proceed to install both the
vc_redist.x64.exeandvc_redist.x86.exefiles. This installation process integrates the necessary runtime libraries into your system, allowing applications to access the required DLLs for execution.
3. After installation, run the application that was showing the error "The application could not load mfc140u.dll" or "mfc140u.dll not found." This should resolve the issue as the necessary DLL files are now available in the system's directory paths, enabling the application to function correctly.
Additional Solutions
In some cases, the issue may persist even after installing the Visual C++ Redistributable Packages. Here are additional steps you can take:
- System File Checker (SFC) Scan: Run the System File Checker tool to repair missing or corrupted system files. Open Command Prompt as an administrator and execute the command:
sfc /scannow. This tool scans for integrity violations and attempts repairs. - Windows Update: Ensure your Windows operating system is up-to-date. Updates often include patches that can resolve DLL-related issues. Go to
Settings > Update & Security > Windows Updateand click on Check for updates.
Summary
To resolve the "mfc140u.dll" error in AutoCAD, start by installing the correct Microsoft Visual C++ Redistributable Package for your Visual Studio version. Ensure both 32-bit and 64-bit versions are installed if you are using a 64-bit Windows system. If the issue persists, perform a System File Checker scan and ensure your Windows system is fully updated. These steps should effectively address the missing DLL error.
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