FIX: winmm.dll is missing

The winmm.dll in Windows 10 is a Windows Multimedia API module primarily for audio and joystick functions.
If the winmm.dll is corrupted or missing, a winmm.dll error message will pop up when you try to run some software.
To fix this annoying error, we recommend you to use a suitable repair tool that you can find below, among other solutions.
You may also need to reset your Windows, and for that you can find the exact steps in this article, so keep reading!

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Winmm.dll is a Dynamic Link Library system file for Windows. When that file becomes inaccessible, some software will not run. Then an error message like this will pop up:

This application has failed to start because winmm.dll was not found.

To fix that DLL error, check out some of these potential resolutions for it.

How can I fix the winmm.dll is missing error?

1. Use third-party tools to repair your DLLs

If the problem is not fixed yet, then we recommend you to use the amazing Restoro repair tool, that will get rid of all the errors in your PC for good.

Restoro is a reliable third-party DLL fixer which uses a built-in automated system and an online library full of functional DLLs to replace and repair any files that might be corrupted or damaged on your PC.

All you need to do to resolve your PC’s problems is to launch it, and simply follow the on-screen instructions to start the process, as everything else is covered by the software’s automated processes.

This is how you can fix registry errors using Restoro:

Download and install Restoro.

Launch the software.

Wait for it to scan your PC for any stability issues and possible malware.

Press Start Repair.

Restart your PC for all the changes to take effect.

After this process is completed your PC will be as good as new, and you will no longer have to deal with BSoD errors, slow response times, or other similar issues.

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Disclaimer: This program needs to be upgraded from the free version in order to perform some specific actions.

2. Scan system files

Press the Windows key + S, and type cmd.

Right-click Command Prompt, and select Run as administrator.

First, run a Deployment Image scan by entering the following command, and press Enter: DISM.exe /Online /Cleanup-image /Restorehealth

Then type sfc /scannow in the Command Prompt, and hit Enter.

System File Checker command winmm.dll is missing

Thereafter, wait for the System File Scan to complete its scanning. Restart Windows if the SFC scan does repair something.

3. Check the Recycle Bin

Double-click the Recycle Bin icon on the Windows desktop.

Select the winmm.dll file in the Recycle Bin if you find it there.

Then click the Recycle Bin Tools tab.

Press the Restore the selected items button.

4. Reinstall the software the error arises for

To open Run, press the Windows key + R at the same time.

Input appwiz.cpl and press Enter to open the Programs and Features Control Panel applet.

Windows uninstaller winmm.dll is missing

Select the software the winmm.dll error arises for.

Click the Uninstall option.

Click Yes on any dialog box windows that might open.

Restart your desktop or laptop after uninstalling software.

Then download the installer for the latest version of the uninstalled software.

Open the program’s setup wizard to reinstall it.

If the winmm.dll error occurs for a more specific program, reinstalling that software might just fix the issue.

Installing and uninstalling programs can be a headache for you, and if you don’t do it correctly, you can get serious problems with your PC.

Expert Tip: Some PC issues are hard to tackle, especially when it comes to corrupted repositories or missing Windows files. If you are having troubles fixing an error, your system may be partially broken. We recommend installing Restoro, a tool that will scan your machine and identify what the fault is.
Click here to download and start repairing.

That’s why we recommend you the IObit Uninstaller 10 PRO software. This tool will take care of your PC for you, and you make sure you don’t make mistakes that lead to other mistakes.

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This tool completely remove leftovers of programs uninstalled properly and leaves your PC clean of errors, so try it out now!

5. Restore Windows to an earlier date

Open Run, and enter rstrui.

Click OK to open System Restore.

Press the Next button to proceed.

Click the Show more restore points option if you can.

System Restore window winmm.dll is missing

Select a restore point that will roll Windows back to a time that predates the winmm.dll error on your PC. (If you’re not sure, your best bet is to select the oldest restore point listed.)

Software installed after a restore point gets deleted.

To check what software will be deleted, click the Scan for affected programs button.

Press the Next and Finish buttons.

Restoring Windows to a time that predates the winmm.dll error on your laptop or desktop is another probable fix.

6. Reset Windows 10

To reset Windows 10, click the Type here to search button.

Input reset in the search box, and then click Reset this PC.

Next, click the Get Started button.

Select the Keep my files option, and then click the Next button.

Keep my files button winmm.dll is missing

Press the Reset button to continue.

Reinstalling Windows 10 by resetting the platform should restore a missing winmm.dll system file.

So, that’s how you can fix the winmm.dll is missing error. Note that the above resolutions can also fix similar errors for other DLL files.

For any questions or other suggestions, please write to us in the comments section below.

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