The Microsoft Visual C++ Redistributable packages are collections of runtime components required to run applications developed with Microsoft Visual C++ on machines that do not have Visual Studio installed. Among these packages, the Visual C++ 2015–2019 Redistributable (x64) represents a consolidated and widely deployed runtime that supports applications built with Visual Studio 2015, 2017, and 2019. This essay examines its purpose, technical contents, compatibility and servicing model, security and stability implications, common deployment scenarios, and best-practice recommendations for developers and system administrators.
Purpose and technical contents The primary purpose of the Visual C++ 2015–2019 Redistributable is to supply the universal C and C++ runtime libraries that programs rely on at runtime. These include implementations of the C runtime (CRT), the standard C++ library (STL), the Microsoft Foundation Classes (MFC) when used, and other support components such as the C++/CLI and ATL runtime pieces. For the x64 variant, the package provides 64-bit versions of these binaries, typically named msvcp140.dll and vcruntime140.dll, along with ancillary DLLs that handle locale, i/o, memory management, exception handling, and other core services.
By centralizing these runtime libraries into a redistributable package, Microsoft enables multiple applications to share a single, serviced set of runtime binaries rather than bundling separate copies with each application. This reduces disk usage, simplifies updates, and helps ensure consistent runtime behavior across applications that target the same Visual C++ toolset.
Compatibility and servicing model Microsoft consolidated the Visual C++ 2015, 2017, and 2019 runtimes into a single redistributable starting with Visual Studio 2015 Update 3 and later Visual Studio releases. The unified package follows a binary-compatible servicing model: code built against the 2015 toolset will load the same runtime versions as code built with 2017 or 2019 (within compatibility constraints). The vendor provides updates through Windows Update and downloadable installers; these updates may include security fixes, bug fixes, and performance improvements.
An important implication of this model is that updating the shared runtime affects every application that depends on it. While this can improve security and reliability across the system, it also means that regressions in a runtime update have the potential to impact multiple deployed applications. To mitigate such risks, Microsoft strives for backward compatibility and maintains update testing, and developers can choose alternative deployment strategies when necessary (see next section).
Deployment scenarios and considerations There are two common ways to deploy the Visual C++ runtime for a given application:
Shared system installation (recommended): Install the Visual C++ Redistributable (x64) globally on the target system. This allows multiple applications to reuse the same runtime binaries and benefit from centralized servicing via Windows Update or manual redistributable updates.
Local (application-local) deployment: Place the required runtime DLLs in the same directory as the application executable. This isolates the application from system-wide updates and avoids dependency on a separate installer, but increases per-application disk usage and can complicate servicing and security patching.
Developers targeting wide distribution (retail software, enterprise installers) typically include the redistributable installer as part of their setup or check for and install it as a prerequisite. For portable or single-folder deployment scenarios, copying the necessary DLLs beside the executable may be used, but developers must ensure licensing compliance and remain vigilant about applying security updates.
Security and stability Because the redistributable supplies low-level runtime components, keeping it up to date is important for securing applications against vulnerabilities in common runtime code paths (memory management, parsing, locale handling, etc.). Organizations should deploy updates from trusted sources (Microsoft Update Catalog or Windows Update) and test critical applications after updates, particularly in enterprise environments where compatibility concerns are higher.
For stability, Microsoft’s binary compatibility promise generally minimizes disruptive changes; however, complex applications that rely on undocumented behavior, specific timing, or uncommon CRT internals may be sensitive to runtime updates. In such cases, developers should perform compatibility testing against servicing releases and consider application-local deployment when necessary to maintain a tested runtime environment.
Versioning and diagnostics Although marketed as the “2015–2019” redistributable, the runtime receives continuing patches and version increments; the package’s installer and runtime DLLs carry explicit version numbers (file version / product version). Diagnosing runtime-related issues often involves checking the installed redistributable version, examining the application’s manifest (for SxS dependencies), and using tools like Dependency Walker, Process Explorer, or modern event/logging facilities to identify missing DLLs or mismatched bitness (x86 vs x64). Ensuring that the x64 redistributable is present is crucial for 64-bit applications; a missing x64 runtime commonly manifests as a failure to load msvcp140.dll or vcruntime140.dll. microsoft visual c 2015 redistributable 2019 x64
Best practices
Conclusion The Microsoft Visual C++ 2015–2019 Redistributable (x64) is a foundational component for running modern Windows applications built with Visual Studio’s C++ toolset. Its unified, serviced model simplifies distribution and patching, while centralization improves security and consistency across applications. Careful deployment planning, version verification, and testing mitigate compatibility risks and ensure stable, secure runtime behavior for 64-bit C++ applications.
Introduction
The Microsoft Visual C++ 2015 Redistributable 2019 x64 is a software package developed by Microsoft that provides runtime components of Visual C++ libraries. These libraries are required to run applications that were developed using Visual C++ and are targeted for 64-bit Windows operating systems.
Overview
The Microsoft Visual C++ 2015 Redistributable 2019 x64 package includes:
These libraries are used by many applications developed using Visual C++, including games, productivity software, and other types of applications.
Key Features
The Microsoft Visual C++ 2015 Redistributable 2019 x64 package provides the following key features:
Benefits
The Microsoft Visual C++ 2015 Redistributable 2019 x64 package provides several benefits, including: Memory Addressing: Supports >
System Requirements
The Microsoft Visual C++ 2015 Redistributable 2019 x64 package has the following system requirements:
Installation and Maintenance
The Microsoft Visual C++ 2015 Redistributable 2019 x64 package can be installed using the following methods:
Security Considerations
The Microsoft Visual C++ 2015 Redistributable 2019 x64 package is a trusted component of the Windows operating system, and it is regularly updated by Microsoft to ensure that it remains secure.
Conclusion
In conclusion, the Microsoft Visual C++ 2015 Redistributable 2019 x64 package is an essential software package that provides runtime components of Visual C++ libraries for 64-bit Windows operating systems. The package provides improved application compatibility, reduced troubleshooting, and easy deployment. It is widely used by many applications and is a trusted component of the Windows operating system.
Recommendations
References
The Microsoft Visual C++ 2015-2019 Redistributable (x64) is a package of shared code (runtime libraries) that allows your computer to run software built with Microsoft's C and C++ development tools. Without these libraries, many of your favorite apps and games simply won't open, often throwing cryptic "DLL not found" errors. What is a Redistributable? 4GB of virtual address space
Think of it as a "translator's handbook." Instead of every software developer including thousands of pages of standard instructions (the C++ libraries) inside their own app, they rely on a shared copy already installed on your Windows system.
Shared Resources: Multiple programs can use the same installation, saving disk space.
Architecture Matters: On a 64-bit (x64) version of Windows, you can install both x64 and x86 (32-bit) redistributables. You typically need both because some 64-bit apps have 32-bit components. The "Unified" 2015-2022 Package
You might notice that modern installers are now labeled as 2015-2022 or 2015-2019. Microsoft changed how these work starting with version 14.0: Latest Supported Visual C++ Redistributable Downloads
A Visual C++ Redistributable installs Microsoft C and C++ Runtime libraries. Many applications built by using Microsoft Visual C++ Microsoft Learn
| Component | Description |
|-----------|-------------|
| Name | Microsoft Visual C++ 2015-2019 Redistributable (x64) |
| Typical DLLs | vcruntime140.dll, vcruntime140_1.dll, msvcp140.dll, concat140.dll, vccorlib140.dll |
| Installer | VC_redist.x64.exe |
| Registry key (example) | HKLM\SOFTWARE\Microsoft\VisualStudio\14.0\VC\Runtimes\x64 |
| Problem | Likely Fix |
|---------|-------------|
| Installer says “Another version is already installed” | Uninstall old 2015/2017/2019 x64 versions via Control Panel, then install the latest 2015-2022 package. |
| “0x80240017 – Unspecified error” | Windows Installer is corrupt. Run sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth. |
| The installer hangs | Temporarily disable antivirus, reboot, and run installer as Administrator. |
| App still shows missing DLL after install | The app may need the x86 version even on 64-bit Windows. Install both x64 and x86. |
memcpy, printf, exception handling, C++ Standard Library).Cause: A newer or older version exists.
Solution: Uninstall all VC++ 2015-2022 x64 entries from Programs and Features, then reinstall the latest vc_redist.x64.exe.
One common misconception is that the 2015-2019 x64 package replaces all older versions. It does not.
2005, 2008, 2010, 2012, 2013 – These have different binary interfaces (ABIs). A program compiled with VC++ 2008 expects the msvcr80.dll chain, not the modern VCRUNTIME140.dll. You must keep older redistributables installed alongside the 2015-2019 package.
2022 Redistributable – Starting with Visual Studio 2022, Microsoft once again unified the runtimes. The 2015-2019-2022 package is now the standard. If you install the 2022 x64 version, it will overwrite/upgrade the 2015-2019 package. For most users, the 2022 redistributable is the best choice going forward.
Recommendation: Do not manually delete old runtimes. Many legacy apps (especially enterprise software) will break.
The x64 variant is distinct from x86 (32-bit) and ARM64 versions. Key characteristics include:
__fastcall-like Microsoft x64 calling convention (RCX, RDX, R8, R9 for first four integer/pointer arguments), simplifying exception handling and stack unwinding.