The a0000191.dll error is associated with Microsoft MPEG-4 V1/2/3 VKI Codec. Typically, codec files are used to assist the end user in downloads of audio or video files. An a0000191.dll error message could mean a couple of different things.

Codec files have a reputation for silently carrying malware such as Trojans. It’s unknown if the a0000191.dll file contains a security threat to your computer or if there is an error with the file being misplaced, corrupted, damaged, or deleted.

Going through every registry file is not an easy task even for the most experienced professional. Recently, forerunners in anti-spyware such as ZookaWare started offering a solution to registry errors.

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One Response

  1. lally@gmail.com' Bobby Gray says:

    I use regzooka for two computers and both seems to work better.

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