The file x420xlj.dll is a piece of the Job Finishing Core of the printer driver for the Xerox WorkCentre 415/Pro 420 XL from Xerox. A driver is a piece of software that helps a computer to work with some sort of hardware, like a printer. This file is part of the printer driver for the WorkCentre Pro 420, which will also work with other Xerox printers like the 415.
If the x420xlj dynamic link library file is part of an error, the problem may make it impossible for you to use your printer. When you see a dll error it is usually related to your registry, and to fix it you can clean your registry.
Cleaning your registry is a simple matter of going through the thousands of entries and making sure that each one is correct. While it would take a human weeks to sort through all the entries, we luckily have programs that will do the work for us. ZookaWare PC Cleaner is guaranteed to find and fix every problem in your registry. Use ZookaWare PC Cleaner now to clean up your registry and get back to work.