The m3sbusc.dll file stems from an unknown program. However, this is a common problem. There are way too many registry related files to be able to index them all. However, you do not need to know the related program in order to check for the legitimacy of the file.
ZookaWare created ZookaWare PC Cleaner to do this for you. They offer a free scan to anyone wanting to check out registry errors. Click the button below and ZookaWare PC Cleaner will list the entire registry related errors on your computer.
If you want ZookaWare PC Cleaner to resolve all the errors, you will need to purchase a license. The license is good for one year and is backed by a 60-day money-back guarantee. This allows you to check ZookaWare PC Cleaner out for yourself and see how much better your computer runs without all those errors.