a0000191.dll: download the file and fix the error

32-bit (x86) Microsoft MPEG-4 Video Codec Scanned by antivirus

a0000191.dll is a file of the software Microsoft MPEG-4 Video Codec (“Microsoft MPEG-4 Video Codec”), published by Microsoft Corporation. Version offered here: 4.00.0.3688, 32-bit.

Programs that need it refuse to start, or show an error, when it is missing or damaged. Two methods can fix the error, below.

Method 1 · quick · about 1 minute

Download only a0000191.dll

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

⇓ Download a0000191.dll .zip file: the DLL + its instructions · downloaded 2,296 times

Version: 4.00.0.3688
Architecture: 32-bit (x86)
Size: 416.3 KB
Publisher: Microsoft Corporation

Then:

Extract a0000191.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\SysWOW64 (64-bit Windows) or C:\Windows\System32 (32-bit Windows), then restart.

SHA-256: 8358b108fa5cac78858c4a66c9623474108e1ef52cbfb07b0c4ffcac7142b0a0 · Check on VirusTotal · Product: Microsoft MPEG-4 Video Codec

Method 2 ·complete · depends on the program

Reinstall the program that shows the error

The program normally provides a0000191.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 a0000191.dll

The program can't start because a0000191.dll is missing.
Error loading a0000191.dll. The specified module could not be found.
Failed to load a0000191.dll

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