The file x420xlwu.dll is a component of the Work Management Core of the driver for the Xerox WorkCentre Pro 420 XL from Xerox. Drivers are software applications that allow your computer to work with a piece of hardware, such as a printer.
This particular driver works with Xerox WorkCentre 415 or with Xerox WorkCentre Pro 420 XL printers. Errors with the x420xlwu dynamic link library may indicate an issue in your Windows registry that needs to be resolved before you can use your Xerox WorkCentre printer.
The registry contains all the information Windows requires to run each installed application on your computer. If something goes wrong in the registry, you will get errors and your programs will not run correctly. Fixing problems in the registry can be difficult for the non-expert, and annoying for the expert.
To save you the trouble, run ZookaWare PC Cleaner. ZookaWare PC Cleaner is a registry cleaner. ZookaWare PC Cleaner will find and fix every problem in your registry for you, guaranteed. And you can get back to more interesting work.