Learn how to fix the MFC71u.dll is missing error on your computer in Windows 10, 7, and 8 easily and in just a couple of minutes.
One of the most common errors in Windows 8, Windows 7, and Windows 10 is related to the MFC71u.dll file. Apparently, the error in question appears when we try to run a program that depends on this library, in the form of messages such as: “The program can’t start because MFC71u.dll is missing,” “MFC71u.dll is missing from your computer,” “MFC71u.dll is missing,” etc. This time, we’ll solve this common error through a series of methods.
Solution to the MFC71u.dll error in Windows 10, 7, and 8
As with most DLL-related errors, the solution is to reinstall the Visual Studio C++ library , a set of libraries developed by Microsoft. Before proceeding with the download, however, we’ll need to know the architecture of our computer, which can be 32-bit or 64-bit.
In this case, the process is as simple as right-clicking the Windows logo in the Start menu. Next, click System and then System Type , where the PC’s architecture will be displayed.
- Download Visual C++ for Windows
Now, all you have to do is go to the Microsoft website to download the version compatible with your computer: x86 for 32-bit computers and x64 for 64-bit computers . The installation process is no different than any other program. However, once installed, you’ll need to restart your computer for the changes to take effect.
Download MFC71u.dll to install it manually on Windows
If the above method does not work, we can try downloading the library manually to install it in its corresponding directory.
- Download MFC71u.dll
Once downloaded, navigate to Local Disk C:/Windows/System32 and paste the file you just downloaded into the root of the folder. If your computer has a 32-bit processor, you’ll also need to paste the file into the SysWOW64 folder in the same path.
Move the MFC71u.dll file to the program execution folder
If the MFC71u.dll error persists in the program we’re trying to run, the next step is to replicate the file to the application’s runtime directory. To do this, right-click the program’s icon on the Windows Desktop and click Open file location.
Now we just have to move the library to the root directory of the folder to force its detection, as can be seen in the screenshot above.
And if none of the above works…
We’ll need to use the Windows command prompt, better known as CMD. To run it, type its name in the Windows Start menu search bar. Before running the program, right-click on the program icon and click Run with administrator privileges.
With the machine open, we will write the following command by pressing Enter:
sfc /scannow
The machine will now run a diagnostic tool to automatically analyze and repair system errors. The process may take a few minutes, depending on the hard drive’s read and write speed.
