mfc140u.dll
This file belongs to Microsoft Visual C++ 2015-2022 Redistributable. Install that package and the DLL arrives with it, in the right place and correctly registered.
Do not download this DLL on its own
Searching for a missing DLL by name leads to sites that hand you that single file. It is one of the oldest and most effective malware delivery methods there is, and a system DLL from an unknown source is indistinguishable from a deliberately modified one. There is never a legitimate reason to obtain a runtime component that way.
What it is
The Microsoft Foundation Classes library, the framework behind a great many traditional Windows desktop interfaces. It ships inside the same Visual C++ redistributable.
Where you see it: Older-style desktop applications with classic Windows dialogs and toolbars.
Install Microsoft Visual C++ 2015-2022 Redistributable
The official package, with the download URL Microsoft declares and the SHA-256 of every installer so you can verify it before running.
- Microsoft Visual C++ v14 Redistributable (x64)v14.51.36247.0 · 2 hashed installers100
- Microsoft Visual C++ v14 Redistributable (x86)v14.51.36247.0 · 1 hashed installer100
After downloading you can check the file against our index to confirm it is the installer the publisher shipped.