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concrt140.dll

Updated: Files Available: 1,166
Recently Updated Verified Metadata AI Analysis x86-64 (64 bit) x86 (32 bit) ARM64 ARM (Thumb 2)

Download and install concrt140.dll to fix missing or corrupted DLL errors.

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DLL Overview

Last Updated
Jul 5th, 2026
Filename
concrt140.dll
Company
Microsoft Corporation
Product
Microsoft® Visual Studio®
Description
Microsoft® Concurrency Runtime Library
Architecture
x86-64 (64 bit) x86 (32 bit) ARM64 ARM (Thumb 2)
Metadata Consensus
806/1,166 Files 69.1%
Higher percentages indicate stronger agreement across versions. View available versions or browse repository metadata to compare differences between variants.

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About concrt140.dll

concrt140.dll is a DLL file (Dynamic Link Library) used by Windows programs to share code and resources. It allows multiple applications to use the same functions, improving performance and reducing redundancy.

AI-assisted overview · Nov 28, 2025

Overview

What Is concrt140.dll?

concrt140.dll is a core component of the Microsoft Concurrency Runtime (ConcRT) — the high-level parallel execution library used by applications built with Microsoft Visual C++ (MSVC) 14.x / 2015+.

It enables modern applications and games to efficiently use:

  • Multithreading
  • Parallel algorithms (parallel_for, task groups, PPL)
  • Thread-pool scheduling
  • Asynchronous task execution
  • Synchronization and coordination primitives

Unlike lower-level CRT libraries (ucrtbase.dll, vcruntime140.dll), concrt140.dll implements higher-level concurrency features required by MSVC-built software. If it is missing or corrupted, programs relying on these features typically fail to start or crash immediately.

What Does concrt140.dll Provide?

✔ Parallel Execution & Task Scheduling

Enables applications to:
  • Distribute workloads across multiple CPU cores
  • Run parallel loops
  • Execute complex asynchronous tasks

✔ Thread Pooling & Resource Management

Provides:
  • Efficient thread pools
  • Work-stealing schedulers
  • Task prioritization and load balancing

✔ Synchronization Primitives

Supplies:
  • Locks
  • Concurrency-safe structures
  • Condition mechanisms for older Windows versions

✔ Runtime Support for MSVC Applications

Any program using PPL / ConcRT automatically loads concrt140.dll at runtime.

Where Does concrt140.dll Come From?

✔ Visual C++ Redistributable (2015–2022)

The DLL is installed through the official Microsoft Visual C++ 14.x Redistributable package. Installing or repairing this redistributable ensures all required runtime files are present.

✔ Bundled With Some Installers

Some software includes a local copy of the MSVC runtime inside folders such as:
  • redist/
  • bin/
  • installer/resources/

But most programs rely on the central redistributable.

Common concrt140.dll Errors

Examples of real-world error messages include:

"The program can’t start because concrt140.dll was not found."
"concrt140.dll is missing from your computer."
"Cannot continue — concrt140.dll was not found."
"Error loading concrt140.dll — The specified module could not be found."
"The code execution cannot proceed because concrt140.dll was not found."
"concrt140.dll is either not designed to run on Windows or contains an error."
  • Errors like 0xc0000142, 0xc000007b, or STATUS_INVALID_IMAGE_FORMAT when the DLL is corrupted or mismatched
  • Program or game crashes immediately on launch

Why These Errors Happen

✔ Missing or Corrupted Visual C++ Redistributable

A failed or corrupted VC++ installation often causes missing DLL errors.

✔ Windows System File Corruption

May occur after:
  • Interrupted system updates
  • File-system issues
  • Antivirus quarantines

✔ Architecture Mismatch

Examples:
  • A 64-bit application requires the 64-bit runtime
  • A 32-bit program cannot load a 64-bit DLL

✔ Wrong DLL Placement or Tampered Files

Copying DLLs manually into system folders often leads to failures or dependency conflicts.

How To Fix concrt140.dll Errors

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

Install from Microsoft’s official site. On 64-bit Windows, install both:
  • x64 redistributable
  • x86 redistributable

2. Run System File Checker 

sfc /scannow

3. Repair Windows Image (If Needed) 

DISM /Online /Cleanup-Image /RestoreHealth

4. Reinstall or Repair the Affected Program

If the app includes its own runtime files, reinstalling restores the correct version.

5. Ensure Matching Architecture

  • 64-bit app → 64-bit runtime
  • 32-bit app → 32-bit runtime

6. Avoid Random DLL Downloads

Using mismatched standalone DLLs frequently causes additional errors.

Summary

concrt140.dll is the main runtime library for Microsoft’s Concurrency Runtime, enabling multithreading, parallel algorithms, and asynchronous execution in MSVC-built applications.

If it is missing or corrupted, programs may fail to start or crash immediately. The correct fix is to install or repair the official Visual C++ Redistributable, use SFC/DISM if needed, ensure matching architecture, and avoid using random DLL files.

File information is supported by Human Assisted Artificial Intelligence and should be used as a helpful tool. However, it is important to keep in mind that this information may not be up-to-date or entirely accurate.

Troubleshooting DLL Errors

Most errors involving concrt140.dll occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application or replacing the DLL resolves the issue. The steps below cover the most common and reliable ways to fix these errors.

Windows DLL Error Examples

This application has failed to start because concrt140.dll was not found. Re-installing the application may fix this problem.
concrt140.dll Not Found.

Fixes and Solutions

The first step in resolving DLL errors is to completely uninstall the affected software and reinstall its latest version. We know this does not always solve the problem, which is why DLLme exists. If reinstalling the application does not help, or if you are unsure which app is causing the error, follow the steps below. These are the most common solutions for fixing concrt140.dll errors.

  • Repair Windows: Make sure Windows is fully updated, then open Windows Terminal or PowerShell as an administrator (search for “PowerShell” in the Start menu, right-click it, and choose “Run as administrator”). This allows you to repair the Windows component store and run the System File Checker (SFC).

    Repair the Windows component store so SFC can pull clean files:

    DISM /Online /Cleanup-Image /RestoreHealth

    Scan all protected system files and automatically repair problems:

    sfc /scannow
  • Uninstall & Reinstall: On this DLL page, check the Company/Product section to identify the related app, then fully uninstall it. If you plan to continue using it, reinstall the latest version. Be sure to save or back up any important data before uninstalling. Windows or antivirus software may sometimes quarantine DLL files, especially if the DLL is unfamiliar or appears suspicious. Check your antivirus quarantine or logs to determine if this is the cause of your issue.
  • Download the DLL: Download the latest 32-bit or 64-bit version of the DLL directly from our repository using the download button above. Most users will need the 64-bit version, but if you are unsure, or if a 64-bit version is not available, you can install both the 32-bit and 64-bit DLLs. DLLme verifies DLLs that come from our admins, partners, and trusted affiliates. User-uploaded files may be verified later if a trusted source is confirmed.
  • Register the DLL: Most DLL files do not need registration, but some DLLs are COM components and must be registered to work correctly. If registration is required, open Windows Terminal or PowerShell as an administrator.

    Register the DLL (you can also drag the DLL file into the window to automatically fill in its full path): 

    regsvr32 "C:\path\to\concrt140.dll"

    If you are registering a 32-bit DLL on 64-bit Windows, use the 32-bit RegSvr32: 

    C:\Windows\SysWOW64\regsvr32 "C:\path\to\concrt140.dll"

    Or open Windows Terminal/PowerShell in the DLL’s folder and run: 

    regsvr32 concrt140.dll

How to Install concrt140.dll

To install concrt140.dll, place the DLL file in the appropriate Windows system folder or in the same folder as the application’s .exe file. If you are not sure which version (32-bit or 64-bit) to use, you can safely install both.

On 64-bit versions of Windows, place 64-bit DLL files in:

C:\Windows\System32\concrt140.dll

Place 32-bit DLL files in:

C:\Windows\SysWOW64\concrt140.dll

Or place the DLL file next to the application’s .exe:

C:\path\to\exe\concrt140.dll

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