The z_setup.dll file is an element within the z_setup.dll module, but the author of this file is currently unknown. The z_setup.dll file is being reviewed to learn more about its origins, but it is possible to see this file cropping up as a source for error messages on a computer. For this reason, a reliable registry scan and cleaner should be used to prevent these kinds of error messages from occurring.
Error messages containing the z_setup.dll file could be due to the deletion, corruption, or overwriting of important files used to run a computer normally. This can sometimes occur when other programs are deleted or installed on the hard drive, and it can occur to almost any user.
A company called ZookaWare PC Cleaner is one dependable source for cleaning computer registries. In fact, ZookaWare PC Cleaner offers guaranteed service and will even provide a free initial scan to indicate whether or not a registry cleaner is required at all.