The file w2m.dll is a component of Wildcard Select from All Your Software. Wildcard Select is a freeware utility that adds the ability to input a wildcard pattern into Windows Explorer to select files that match the pattern. This is a shell extension, so there is no visible program and no icons, it runs when Windows Explorer is running.
If you get an error with this file, you should probably run a registry cleaner to determine if there is a mistake for the registry entry for this or a related file. You can also attempt to reinstall the software if you have the original installation files available.
The registry is a database that tracks all the files installed on your computer. If the entry for a file has a mistake in it, Windows won’t be able to use that file and any programs that require that file to run will not work.
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