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A “DLL missing” message is a symptom, not a single diagnosis. First copy the exact DLL filename, the complete error text, the program or Windows component showing it, and when it appears. If the file is a Microsoft Visual C++ runtime, install the matching Microsoft Redistributable; if only one application fails, repair or reinstall that application; if several applications or Windows components fail, repair Windows with DISM and System File Checker. Do not download an individual DLL from a random website or copy one into System32.
The wording may be “vcruntime140.dll not found” or “the code execution cannot proceed because [DLL] was not found.” Those messages look similar, but a runtime DLL, an application-specific DLL and a damaged Windows component require different fixes.
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Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsWhat does a missing DLL error mean?
A DLL (dynamic-link library) contains code that an executable loads when it starts or performs a particular function. Windows reports a missing-DLL error when the expected file cannot be found, cannot be loaded, or is incompatible with the program. The dialog does not identify which of those conditions is responsible.
The filename is the most useful clue. Names such as vcruntime140.dll usually point to a Microsoft Visual C++ runtime. A name that matches the application or a vendor component may instead require that program’s own installer. The affected executable matters just as much: one failed game, utility or business app suggests an application installation issue, while many unrelated programs failing suggests a broader Windows problem.
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What should I record before changing anything?
Write down the details before closing the dialog. They help you choose a safe repair and give the publisher enough information to identify a required runtime.
- The DLL filename, including every digit, letter and extension.
- The complete message, including any error code.
- The executable or app that displays it.
- Whether it appears while launching, updating, signing in, installing or during Windows startup.
- What changed immediately beforehand, such as an application update, Windows update, uninstall or disk cleanup.
Do not infer a specific runtime merely because the message contains the letters “DLL.” Keep a screenshot or copied text, because an installer or support technician may need the exact wording later.
Is the missing DLL itself dangerous?
The message alone does not prove malware. It means the program could not load a library it expected. The safe response is to restore the file through Microsoft’s runtime installer or the affected application’s official installer, not to obtain a loose file from a download site.
An individual DLL can be the wrong version, the wrong processor architecture or a modified file. Manually placing it in C:WindowsSystem32 can create new loader errors and makes it harder to determine which package owns the file. Do not delete existing Visual C++ Redistributables simply because one program reports a missing file; older generations are designed to coexist.
Does the DLL name identify a Visual C++ runtime?
Sometimes. vcruntime140.dll belongs to the Visual C++ runtime family, but not every similarly named file uses the same package. Microsoft’s current v14 packages support applications built with Visual Studio 2017 and later. Separate legacy sections cover Visual C++ 2013, 2012, 2010, 2008 and 2005, and those generations remain installed side by side when applications need them.
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Microsoft’s supported-download page lists current x86, x64 and ARM64 installers and notes that the version changes frequently: Microsoft Visual C++ Redistributable latest supported downloads. The page applies its current v14 guidance to Windows 10 and Windows 11. It also documents the latest available 2015 redistributable separately; Microsoft says Visual Studio 2015 support ended on October 15, 2025.
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The package must be at least as recent as the MSVC build tools used to create the application, and its architecture must match the application’s target architecture. That is not always the same as the architecture of Windows itself.
Which architecture should I install?
| Application or computer clue | Installer direction | Important qualification |
|---|---|---|
| 32-bit (x86) application | Use the Microsoft x86 redistributable. | A 32-bit app on 64-bit Windows still needs the x86 runtime. |
| 64-bit (x64) application | Use the Microsoft x64 redistributable. | Confirm the application is truly 64-bit; Windows being 64-bit is not enough. |
| Windows on ARM64 | Use the package Microsoft specifies for the application. Microsoft notes that its current x64 package contains ARM64 and x64 binaries. | Follow the application publisher’s instructions when it names a particular package. |
| Unknown architecture | Check the publisher’s requirements or installer documentation before selecting a package. | Installing both architectures is not a substitute for identifying an older runtime generation. |
Do not assume that installing the newest v14 package covers every DLL name. Earlier Visual C++ generations have their own redistributables, and an application may explicitly require one of them.
How do I reinstall the correct Visual C++ Redistributable?
Use Microsoft’s official download page or the application publisher’s documented runtime. If the publisher specifies a generation or architecture, follow that instruction rather than guessing from the filename.
- Open Microsoft’s latest supported Visual C++ Redistributable downloads in a browser.
- Identify the runtime generation. For a current Visual Studio 2017-or-later application, use the current v14 section. For an older application, use the corresponding 2013, 2012, 2010, 2008 or 2005 section.
- Select x86, x64 or ARM64 according to the application’s target architecture, not simply your Windows edition.
- Download the installer from Microsoft, close the affected application and run the installer.
- Accept the license terms and choose the repair or install option offered. If setup reports that a newer version is already present, use the installer’s repair option when available.
- Restart Windows if the installer requests it, then launch the program again.
If setup fails, keep its error code. Do not work around the failure by copying a DLL from another computer. The Microsoft documentation links to runtime troubleshooting information for installer problems, and the application publisher can confirm whether a legacy package is required.
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How do I repair an application when only one program fails?
When one application shows the error and other programs work, repair that application before changing Windows system files. A repair option replaces or re-registers components without necessarily removing your settings.
Repair from Windows Settings
- Open Settings and select Apps, then Installed apps on Windows 11. On Windows 10, open Settings > Apps > Apps & features.
- Find the affected program, select its three-dot menu (or the program entry) and choose Advanced options when that option exists.
- Select Repair and wait for Windows to finish. Test the application without changing other settings.
- If repair is unavailable or does not help, use Reset only if you understand that it may remove the application’s local data or preferences.
Repair from Programs and Features
- Press the Windows key, search for Control Panel, open it and choose Programs > Programs and Features.
- Select the application, choose Change or Repair, and complete the vendor’s wizard.
- Restart Windows and test the same action that originally produced the message.
Reinstall from the publisher
If repair fails, uninstall the program only after checking whether its documents, profiles or saved data need to be backed up. Download the current installer from the application publisher, not from a generic DLL archive, and install it again. If the publisher requires an older Visual C++ runtime, use that documented package even when a newer v14 package is already installed.
What if several programs or Windows components report missing DLLs?
Failures in multiple unrelated applications, or in Windows components as well as applications, make damaged Windows components more plausible. Microsoft Q&A support guidance recommends running Deployment Image Servicing and Management (DISM) first and System File Checker (SFC) second. The Q&A page is a support discussion with an independent-advisor answer and generated guidance, rather than a standalone Microsoft support article: Microsoft Q&A guidance for the vcruntime140.dll error.
- Open Command Prompt as administrator. Search for Command Prompt, right-click it and choose Run as administrator; approve the User Account Control prompt.
- At the elevated prompt, run
DISM.exe /Online /Cleanup-image /Restorehealthand press Enter. - Allow DISM to finish. Do not close the window if progress appears to pause temporarily.
- Run
sfc /scannowand allow the verification to reach 100 percent. - Restart Windows, then test the applications that failed.
DISM repairs the Windows component store that SFC uses as a source. Running SFC first can leave it without a healthy source, which is why the recommended order is DISM followed by SFC. Record the final message from each command if the problem remains.
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- The runtime installer fails: preserve the installer error code, confirm that the download matches the application architecture, and consult Microsoft’s runtime troubleshooting material linked from its download documentation.
- The application’s repair and reinstall both fail: contact the publisher with the DLL filename, complete dialog text, application version and installer log or error code. Ask which Visual C++ generation and architecture it supports.
- DISM or SFC reports corruption it cannot repair: keep the command output and investigate Windows servicing or component-store repair with Microsoft support. Do not replace system DLLs manually.
- The error appears only after an application update: check the publisher’s release notes or support instructions for a compatible runtime and a known rollback or hotfix. Keep the exact executable name in your report.
- The error returns after a successful repair: note whether it returns at launch, update or startup and whether another program triggers it. A recurring, app-specific failure points back to that publisher; recurring failures across Windows point to system servicing.
How can I avoid making the problem worse?
- Do not download a single DLL from a third-party site.
- Do not copy a DLL into
System32or another application folder unless the application publisher’s documented installer tells you to do so. - Do not remove every Visual C++ package. Legacy redistributables can be required by older software and are intended to coexist with newer packages.
- Do not install an x64 package solely because Windows is 64-bit; a 32-bit application needs x86 components.
- Do not run DISM or SFC from a non-elevated command prompt; they need administrator rights.
- Do not treat a successful launch of one application as proof that every missing-DLL issue is fixed. Test the specific program and action that originally failed.
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When should I contact the application publisher?
Contact the publisher when the DLL is application-specific, the required runtime generation is unclear, or the official installer produces an error. Include the program name and version, Windows version, architecture, exact DLL filename, full message, when the error occurs and every repair step already attempted.
Publisher support can tell you whether the program bundles a private runtime, requires a legacy redistributable or has a known incompatibility with a recent update. This is more reliable than trying several similarly named DLL files.
Frequently asked questions
Can I copy the missing DLL from another Windows computer?
No. The other computer may have a different runtime generation, architecture, patch level or modified file. Use the owner package—Microsoft’s redistributable or the application’s official installer—so related files and registration are restored together.
Do I need both x86 and x64 Visual C++ packages?
Only when you run applications of both architectures, which is common on 64-bit Windows. Install the architecture each application targets; do not install both as a blind response to an unknown filename.
Will a Windows reset always fix a missing-DLL message?
No. A reset can remove applications and personal configuration while leaving you to reinstall the same publisher runtime afterward. It is a major recovery choice, not a first-line substitute for identifying the DLL and repairing the owning package.
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Why does the error return after I install a newer runtime?
The application may depend on an older Visual C++ generation, a different architecture or its own private DLL. Microsoft supports side-by-side legacy packages, so verify the publisher’s requirement instead of repeatedly replacing the current v14 installation.
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Frequently Asked Questions
Can I copy the missing DLL from another Windows computer?
No. The other computer may have a different runtime generation, architecture, patch level or modified file. Use Microsoft’s redistributable or the application’s official installer so related files are restored together.
Do I need both x86 and x64 Visual C++ packages?
Only when you run applications of both architectures, which is common on 64-bit Windows. Install the architecture each application targets rather than installing both blindly.
Will a Windows reset always fix a missing-DLL message?
No. A reset can remove applications and personal configuration while still requiring the publisher’s runtime afterward. It is a major recovery choice, not a first-line diagnostic step.
Why does the error return after I install a newer runtime?
The application may depend on an older Visual C++ generation, a different architecture or its own private DLL. Verify the publisher’s requirement instead of repeatedly replacing the current v14 installation.
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