msvcp140_atomic_wait.dll
Download and install msvcp140_atomic_wait.dll to fix missing or corrupted DLL errors.
About msvcp140_atomic_wait.dll
msvcp140_atomic_wait.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.
Overview
What Is msvcp140_atomic_wait.dll?
msvcp140_atomic_wait.dll is a Microsoft C++ runtime library included with newer versions of the Microsoft Visual C++ Redistributable. It provides internal support for modern C++ synchronization features introduced in updated releases of Microsoft Visual Studio.
This DLL belongs to the MSVC140 runtime family but is distributed separately to support new low-level concurrency primitives such as std::atomic::wait and std::atomic::notify_one/all.
What msvcp140_atomic_wait.dll Does
msvcp140_atomic_wait.dll supplies critical implementation code used by the C++ Standard Library:
std::atomic::wait()andstd::atomic::notify_one()/notify_all()- High-performance user-mode waiting and waking
- Low-level scheduling primitives used by MSVC’s concurrency layers
- Internal synchronization routines that other MSVC libraries depend on
Any application compiled with newer MSVC toolchains that uses these atomic wait/notify features requires this DLL.
Where msvcp140_atomic_wait.dll Is Found
Installed automatically with the Visual C++ Redistributable:
C:\Windows\System32\ (64-bit)
C:\Windows\SysWOW64\ (32-bit)Some applications may carry a private copy inside their installation directory.
Why Applications Need This DLL
Programs require msvcp140_atomic_wait.dll to:
- Run modern C++ atomics and synchronization features
- Initialize internal MSVC runtime components
- Support threading and concurrency efficiently
Without it, applications that depend on newer C++ features will not launch.
Common Errors Related to msvcp140_atomic_wait.dll
msvcp140_atomic_wait.dll was not found.
The program can't start because msvcp140_atomic_wait.dll is missing.
Failed to load msvcp140_atomic_wait.dll.
Typical causes:
- Missing or outdated Visual C++ Redistributable
- Incorrect architecture (32-bit vs. 64-bit)
- Cleanup tools removing runtime files
- Application shipped incomplete local dependencies
How To Fix msvcp140_atomic_wait.dll Issues
1. Install or Update the Visual C++ Redistributable (Recommended)
Latest downloads: https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist
This installs all modern MSVC runtime components, including atomic_wait.
2. Match Application Architecture
- Install x86 VC Redist for 32-bit applications
- Install x64 VC Redist for 64-bit applications
3. Restore Files Removed by Antivirus
Occasionally the DLL may be quarantined by mistake.
4. Use a Verified DLLme Copy (If Needed)
If the DLL alone is corrupted, replacing it may allow the app to start.
Manual Install Instructions
If you obtained a clean, verified copy of msvcp140_atomic_wait.dll from DLLme:
1. Place the DLL into the application's folder or system runtime directory
<ApplicationFolder>/
C:\Windows\System32\ (64-bit)
C:\Windows\SysWOW64\ (32-bit)2. Ensure companion MSVC runtime files exist
This DLL works alongside:
vcruntime140.dllvcruntime140_1.dllmsvcp140.dllmsvcp140_1.dll
Missing runtime pairs may still prevent startup.
Summary
msvcp140_atomic_wait.dll is a modern Microsoft C++ runtime library required for applications built with up-to-date MSVC toolchains that use enhanced atomic wait/notify operations.
Missing or mismatched versions cause applications to fail at launch. Installing the latest Visual C++ Redistributable—or restoring the correct DLLme copy—typically resolves the issue.
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 msvcp140_atomic_wait.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
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 msvcp140_atomic_wait.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\msvcp140_atomic_wait.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\msvcp140_atomic_wait.dll"
Or open Windows Terminal/PowerShell in the DLL’s folder and run:
regsvr32 msvcp140_atomic_wait.dll
How to Install msvcp140_atomic_wait.dll
To install msvcp140_atomic_wait.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\msvcp140_atomic_wait.dll
Place 32-bit DLL files in:
C:\Windows\SysWOW64\msvcp140_atomic_wait.dll
Or place the DLL file next to the application’s .exe:
C:\path\to\exe\msvcp140_atomic_wait.dll
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