Is mmdevapi.dll a virus?

Legitimate system components can share names with malware. Verify the file path (C:\Windows\System32), check signatures, and scan the system if you suspect an infection.

Where is mmdevapi.dll located?

Typical default locations include C:\Windows\System32. The actual path depends on the software that installed it.

Can I download mmdevapi.dll from the internet?

Use only trusted sources. If you are unsure, reinstall the related app/driver or use Windows repair tools instead of copying random files.

What usually causes mmdevapi.dll errors?

Most issues come from corruption, version mismatch, deletion/quarantine by security software, or an incomplete update.

mmdevapi.dll – errors, causes & repair steps

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Fix mmdevapi.dll Errors Now Manual Guidance

Security Analysis

Safety Score (informational) 90% Safe

Risk score: 3/3 · Checked by WinLibrary Engine

What is mmdevapi.dll?

mmdevapi.dll is a Windows Dynamic Link Library (DLL) referenced by system processes and installed applications. If it is missing or corrupted, Windows may show startup alerts or app crashes.

mmdevapi.dll belongs to the Dynamic Link Library (DLL) family. Depending on the application that installed it, it may be used for UI rendering, networking, media, encryption, or device communication.

Common Error Messages

Bad Image: mmdevapi.dll is either not designed to run on Windows or it contains an error.
The program can’t start because mmdevapi.dll is missing.

Example: Bad Image: mmdevapi.dll is either not designed to run on Windows or it contains an error.

Possible Causes

Disk errors, abrupt shutdowns, or failing storage corrupted the file.
A Windows update or driver update did not complete correctly.
Registry entries point to a missing or moved location.

How to Fix Missing Error?

Run Windows Update and reboot.
Run a full malware scan with a trusted antivirus solution.
If needed, run: DISM /Online /Cleanup-Image /RestoreHealth
Restart the PC and retry the action that triggers the error.
Reinstall the application or driver that is related to the error.

Note: The metadata shown here is informational and may not match your exact system. For critical system components, prefer official sources and Windows repair tools.

Technical Details

Original Filename	mmdevapi.dll
Publisher	Microsoft
File Type	Dynamic Link Library (DLL)
Version	15.0.7401.2710
File Size
Architecture	ARM64
Last updated	2025-11-26
Default location	`C:\Windows\System32`
Downloads	2,422,144
Rating	4.2 / 5 (180 reviews)
SHA-256 Hash	`d00aec120154ff38308c1a3cadf030d0129ddd7148ef3b885989f2744b0a0791`
MD5 Hash	`829283de7899521d16e0acfbc091e13c`
Digital signature	Verified · Microsoft Corporation

FAQ

Is mmdevapi.dll a virus?
Legitimate system components can share names with malware. Verify the file path (C:\Windows\System32), check signatures, and scan the system if you suspect an infection.
Where is mmdevapi.dll located?
Typical default locations include C:\Windows\System32. The actual path depends on the software that installed it.
Can I download mmdevapi.dll from the internet?
Use only trusted sources. If you are unsure, reinstall the related app/driver or use Windows repair tools instead of copying random files.
What usually causes mmdevapi.dll errors?
Most issues come from corruption, version mismatch, deletion/quarantine by security software, or an incomplete update.

mmdevapi.dll Verified Safe