msvcp140_1.dll

What Is msvcp140_1.dll?

msvcp140_1.dll is a C++ runtime library used by applications built with Microsoft Visual C++ v14.x (Visual Studio 2017, 2019, 2022, and later toolsets). It is part of the Microsoft C++ Standard Library (MSVCP family) and works alongside msvcp140.dll to provide modern C++ functionality on Windows.

This DLL was introduced as a so‑called “dot library” to add newer C++ standard library features while keeping binary compatibility with the original msvcp140.dll. Programs compiled with newer Visual Studio toolsets may depend on msvcp140_1.dll in addition to msvcp140.dll.

If it is missing or corrupted, you’ll often see errors when launching games or applications that were built with recent Visual Studio versions.

Common messages include:

"The code execution cannot proceed because msvcp140_1.dll was not found."

"msvcp140_1.dll is missing from your computer."

"Error loading msvcp140_1.dll"

What Does msvcp140_1.dll Do?

✔ Part of the C++ Standard Library

msvcp140_1.dll provides additional C++ standard library implementations that extend what is provided by msvcp140.dll. Together, these libraries support:

• Standard containers (vector, map, string, etc.)
• Algorithms and iterators
• Streams and locale support
• Concurrency helpers and other C++ runtime features

Some newer C++ language and library features added in later Visual Studio 2017+ updates rely on msvcp140_1.dll specifically.

✔ Works With the Universal C Runtime

Modern C/C++ programs on Windows use:

• UCRT (Universal C Runtime) for core C functions
• VCRUNTIME140.dll (and newer) for low‑level runtime support
• MSVCP140 / MSVCP140_1 / related dot libraries for C++ standard library behavior

If any of these components are missing or mismatched, applications can fail to start.

Why Do msvcp140_1.dll Errors Occur?

✔ Visual C++ Redistributable Not Installed or Outdated

Many games and applications depend on the Microsoft Visual C++ 2015–2022 Redistributable. If it’s missing, outdated, or corrupted, msvcp140_1.dll may not be present on the system.

✔ Incomplete or Failed Redistributable Install

If the installer was interrupted or failed silently, some runtime files — including msvcp140_1.dll — might not be installed correctly.

✔ Wrong Architecture

On 64‑bit Windows, you may need both:

• 32‑bit (x86) runtime for 32‑bit applications
• 64‑bit (x64) runtime for 64‑bit applications

If you only have one installed, programs built for the other architecture may complain about missing msvcp140_1.dll.

✔ Corrupted System Files or Disk Issues

File system problems, power loss, or antivirus interference can corrupt runtime DLLs.

✔ Manual File Replacement

Copying msvcp140_1.dll from another machine or from an untrusted site can introduce:

• Version mismatches
• Not designed to run on Windows errors
• New crashes or instability

How To Fix msvcp140_1.dll Errors

1. Install or Repair the Visual C++ 2015–2022 Redistributable (Recommended)

The safest and most reliable fix is to install the latest supported Visual C++ v14 Redistributable from Microsoft.

1. Go to the official Microsoft Latest supported Visual C++ Redistributable page.
2. Download the x86 and x64 installers for the v14 redistributable.
3. Run each installer and choose Repair if it’s already installed, or Install if it is not.
4. Restart your computer and try launching the application again.

This ensures that msvcp140_1.dll, msvcp140.dll, vcruntime140.dll, and related files are all present and correctly versioned.

2. Reinstall the Affected Application or Game

Many installers include the necessary C++ runtime or will trigger its installation.

• Reinstall the game or application that shows the msvcp140_1.dll error.
• During installation, allow any Visual C++ Redistributable setup to run.

3. Match the Correct Architecture

If the error appears only for a specific program, check whether it is 32‑bit or 64‑bit:

• Install the x86 redistributable for 32‑bit apps
• Install the x64 redistributable for 64‑bit apps

Both can and often should coexist on 64‑bit Windows.

4. Repair Windows System Files (If Errors Persist)

If you suspect system corruption:

Run SFC

sfc /scannow

On newer Windows versions, you can also run DISM before SFC:

Run DISM

DISM /Online /Cleanup-Image /RestoreHealth

Then run sfc /scannow again.

5. Avoid Dropping Random Copies Into System32/SysWOW64

Manually copying msvcp140_1.dll into C:/Windows/System32 or C:/Windows/SysWOW64 from an unknown source can break other applications or introduce security risks.

The correct fix is to install or repair the official Visual C++ Redistributable so all runtime components are consistent.

Where Is msvcp140_1.dll Normally Located?

After installing the redistributable, typical locations are:

• C:/Windows/System32/msvcp140_1.dll (64‑bit)
• C:/Windows/SysWOW64/msvcp140_1.dll (32‑bit on 64‑bit systems)

Some applications may also ship local copies inside their own folder:

• ApplicationFolder/
• ApplicationFolder/bin/

Most well‑behaved software relies on the system‑installed redistributable instead of bundling its own version.

Summary

msvcp140_1.dll is a C++ standard library runtime introduced with newer Visual Studio 2017+ toolsets and installed via the Microsoft Visual C++ 2015–2022 Redistributable. Many modern games and applications depend on it in addition to msvcp140.dll.

Errors usually mean the redistributable is missing, outdated, corrupted, or installed only for the wrong architecture. Installing or repairing the latest Visual C++ v14 redistributable from Microsoft — and then restarting your system — fixes the problem in most cases.