mkl_def.dll: download the file and fix the error

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mkl_def.dll is a dynamic link library (DLL) used by some Windows programs.

An error message appears when the program concerned starts if this file is missing, deleted or corrupted. Two methods can fix the error, below.

Method 1 · quick · about 1 minute

Download only mkl_def.dll

Ideal if only this file is reported missing: you replace a single file, without reinstalling anything.

⇓ Download mkl_def.dll .zip file: the DLL + its instructions · downloaded 2,068 times

Size: 2.44 MB

Then:

Extract mkl_def.dll from the zip file and copy it to the folder of the program showing the error (where its .exe file is).
Still getting the error? Copy it to C:\Windows\System32 (64-bit DLL) or C:\Windows\SysWOW64 (32-bit DLL on 64-bit Windows), then restart.

SHA-256: 20723e2d621afa47d7f8f02226bdd16d6ff922196773a67af7c37ef91f088c20 · Check on VirusTotal

Method 2 · complete · depends on the program

Reinstall the program that shows the error

The program normally provides mkl_def.dll itself, in the exact version it expects. Recommended if several files are missing or if the error comes back.

Settings › Apps › Installed apps: uninstall the program or game concerned.
Reinstall it from its original setup program, then restart your computer.

Error messages related to mkl_def.dll

The program can't start because mkl_def.dll is missing.
Error loading mkl_def.dll. The specified module could not be found.
Failed to load mkl_def.dll

Nearby DLL files

mixr3415.dll mixres32.dll mkernel.dll mkl.dll mkl_i.dll mkl_ii.dll mkl_iii.dll mkl_ld.dll