winmm.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Discover information, troubleshooting tips, and solutions for winmm.dll errors and issues. Essential for system stability and audio functionality. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:	other	️ Not detected
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	ℹ️ Unverified	File Hash protection is missing.
File size	7 kb.	7117 bytes.

Hashes:

MD5: cf3b44bd1178b05cc7b09cd4aa3c7cf4
SHA-1: f27cadd3f7a21394f5bb0d51a4180e47ec1d1a34
SHA-256: 9b02b5562163ebeace938c9a4a46d0e7572d5208480111167dc1dd0ac02d0ac9
SHA-512: a76c28a88837e26df9eee9f8d4c42af7cfd4aa386a0c2bf7db95de4568250a27635754890b6e1d8fb8545e88939b755f77227815bded72a1c1a81d2bd445c786

How to Fix Winmm.dll Errors Without Downloading

A winmm.dll error means the Windows Multimedia API file is corrupted, missing, or blocked. Downloading individual DLL files from the internet is dangerous because they often contain malware.

Here is how to fix the error safely using built-in Windows tools.

1. Run SFC and DISM Scan

Windows can automatically find and replace missing system files.

Press Windows Key + X and select Terminal (Admin) or Command Prompt (Admin).
Type sfc /scannow and press Enter.
Wait for the scan to finish.
Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
Restart your computer.

2. Restore the File from the Recycle Bin

If you accidentally deleted the file, it might still be recoverable.

Open the Recycle Bin.
Search for winmm.dll.
Right-click the file and select Restore.

3. Reinstall the Affected Program

If the error only happens when opening a specific app or game, that program's installation is corrupted.

Press Windows Key + i to open Settings.
Go to Apps > Installed apps.
Find the problematic program.
Click the three dots and select Uninstall.
Reinstall the program from its official source.

4. Update Windows

A pending Windows update can resolve compatibility issues and replace outdated system files.

Open Settings (Windows Key + i).
Click on Windows Update.
Click Check for updates.
Install all available updates and restart your PC.

5. Check Your Antivirus Quarantine

Sometimes antivirus software mistakenly flags legitimate DLL files as threats and isolates them.

Open your Antivirus software (or Windows Security).
Protection history / Quarantine section.
Look for winmm.dll.
If found, select Restore and add it to the exclusions list.

📊 Diagnostics Tool: Verify Your `winmm.dll` File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.

Other versions:
️ winmm.dll 10.0.19041.3636 64-bit (x64) | ️ winmm.dll 10.0.19041.546 32-bit (x86)
Similar files:
️winmm.dll.mui | ️winmmbase.dll | ️winmmbase.dll.mui