How to Fix Missing DLL Errors in Windows

Missing DLL errors are among the most common Windows frustrations. They usually appear when a program tries to load a dynamic link library file that is absent, corrupted, or the wrong version. This guide walks you through safe, effective fixes—from simple restarts to system file checks—so you can get your software running again without resorting to risky downloads.

What You’ll Need

Windows administrator account access
Internet connection (for downloading official updates and tools)
The name of the missing DLL file (noted from the error message)
Patience—some steps take several minutes

Step-by-Step

Restart your computer. A simple reboot clears temporary glitches and releases locked files. Many DLL errors disappear after a restart because the program or system service that was holding the file is closed.
Note the exact DLL name and the program that failed. Write down both the file name (e.g., msvcp140.dll) and the application that showed the error. You’ll need this information later.
Run Windows Update. Go to Settings > Update & Security > Windows Update (Windows 10) or Settings > Windows Update (Windows 11). Click Check for updates and install all pending updates. Restart if prompted. Microsoft regularly ships fixes for system DLLs through updates.
Reinstall the affected program. Uninstall the application that reports the missing DLL, then download the latest version from the official vendor site and install it. This often restores the required DLL files that the installer includes.
Run the System File Checker (SFC). Open Command Prompt as administrator (type cmd in the Start menu, right-click, and choose Run as administrator). Type sfc /scannow and press Enter. This scans protected system files and replaces corrupted ones. The scan can take 15–20 minutes; let it finish.
Run DISM (Deployment Imaging Service and Management Tool). If SFC finds issues it can’t fix, run DISM. In the same administrator Command Prompt, type DISM /Online /Cleanup-Image /RestoreHealth and press Enter. This repairs the Windows system image. Restart after it completes.
Update your device drivers. Outdated or faulty drivers—especially graphics and chipset drivers—can cause DLL errors. Open Device Manager (right-click the Start button), expand categories, right-click a device, and select Update driver. Alternatively, visit your PC manufacturer’s support site for the latest drivers.
Install the correct Microsoft Visual C++ Redistributable. Many DLL errors (like msvcp*.dll or vcruntime*.dll) occur because a required Visual C++ runtime is missing. Download the appropriate package from Microsoft’s official website (search for “Visual C++ Redistributable latest supported downloads”). Install both the x64 and x86 versions, even if you think you only need one.
Install the .NET Framework. Some DLLs are part of the .NET runtime. Check if the program requires a specific .NET version, and download it from Microsoft’s official .NET download page. Windows 10 and 11 include .NET Framework 4.8, but older versions may be needed.
Check for a corrupted file in the program’s folder. If the error mentions a DLL that lives in the application’s installation directory (not System32), try reinstalling the program to a different folder, or copy the DLL from another computer running the same version of the program—but only if you are certain the file is safe and compatible.
Run the program as administrator. Right-click the program’s shortcut, select Properties, go to the Compatibility tab, and check Run this program as an administrator. Some DLLs need elevated permissions to load.
Perform a clean boot. This starts Windows with a minimal set of drivers and startup programs, helping you isolate if a third-party service is interfering. Type msconfig in the Start menu, go to the Services tab, check Hide all Microsoft services, then click Disable all. In the Startup tab, open Task Manager and disable all startup items. Restart. If the error goes away, re-enable services one by one to find the culprit.

Common Mistakes

Downloading DLL files from random websites. This is the biggest mistake. Unofficial DLL sites often serve malware or corrupted files, and they rarely fix the underlying problem. Always use official Microsoft or vendor sources.
Copying a DLL from another PC without checking version. Different Windows versions and program versions require different DLL versions. A mismatch can cause even more errors.
Skipping the restart after updates or installs. Many fixes only take effect after a reboot.
Running SFC without administrator rights. The scan will fail or run incompletely if you don’t open Command Prompt as administrator.
Ignoring the program’s own installer. Some programs need to be installed in a specific order (e.g., install the runtime before the main app).

Tips

Always create a system restore point before making major changes (search for “Create a restore point” in the Start menu).
Keep Windows and all drivers updated regularly to prevent DLL issues.
Use the Event Viewer (type eventvwr in Start) to see detailed error logs for the failing application—this can reveal which DLL is actually missing.
If a specific program is giving DLL errors, check its official support forum or knowledge base for known issues and patches.
Consider using the Program Compatibility Troubleshooter (right-click the program’s shortcut > Troubleshoot compatibility) for older software.

Troubleshooting

If the steps above didn’t resolve the issue, try the following:

Check if the error occurs in Safe Mode. Boot into Safe Mode (search “msconfig” > Boot tab > check Safe boot). If the error doesn’t appear in Safe Mode, a third-party driver or service is likely the cause. Use clean boot to isolate it.
Use System Restore. If the error started recently, restore your PC to a point before the problem began. Search for “System Restore” and follow the prompts.
Try the chkdsk command. Disk corruption can cause DLL errors. Open Command Prompt as administrator and run chkdsk /f /r (you may need to restart). This checks the hard drive for errors.
Reinstall the program with a different installer. Sometimes the installer itself is corrupted. Download the installer again from the official site.
If all else fails, perform an in-place upgrade repair. Use the Windows Media Creation Tool to download the latest Windows ISO and run the setup from within Windows. This reinstalls the OS while keeping your files and programs.

Frequently Asked Questions

Is it safe to download DLL files from the internet?

No. Third-party DLL download sites are not trustworthy and often distribute malware. Always get DLLs from official Microsoft or software vendor sources.

Why does the error say “DLL not found” even though the file exists?

This can happen if the DLL is the wrong version, is corrupted, or is not registered. Reinstalling the program or running SFC usually fixes it.

What is the difference between a missing DLL and a corrupted DLL?

Missing means the file is absent entirely. Corrupted means the file is present but damaged. Both produce similar errors, but corrupted files often require SFC or a reinstall.

Can I ignore a missing DLL error?

Ignoring it may cause the program to crash or not start. Some programs may run without the DLL, but it’s risky—the error could indicate a deeper system issue.

Why do I get DLL errors after Windows updates?

Updates can change system files, and some older programs may not be compatible. Reinstalling the program or installing the latest version usually resolves it.

Will reinstalling Windows fix DLL errors?

Yes, a clean installation of Windows will definitely fix DLL errors, but it’s a last resort because it erases your data. Try the in-place upgrade repair first.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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