It seems that some of you are seeing the Windows System Error “Splwow64.exe” when you are trying to print to a Xerox printer or multifunction printer. Well if it helps you are not alone. The error occurs when the print process does not end when printing from Windows 7 or 8, 2008 R2 or Windows Server 2012. This error is not limited to Xerox printers it happens with others too. What this means is that it is not your printer. The error is a Microsoft acknowledged issue.
The issue arises when a 32-bit application is used in the 64-bit environment. The Splwow64.exe process is used to translate the print driver model of a 64-bit operating system and a 32-bit program. The error occurs when the Splwow64.exe does not end when the print job is finished.
One solution is to disable the client side rendering. On the workstation open up the printer properties and select the sharing tab then deselect the “Render print job on client computers” removing the check-mark. This solution works with some operating systems and setups but not all. You can find more information about this solution by searching “client side rendering” on the Microsoft support site.
Another solution is to follow the instructions from the articles listed below from the Microsoft Support site.
Article ID 2815716 for Windows 7 or Windows Server 2008 R2
Article ID 2856657 for Windows 8 or Windows server 2012
The Microsoft solution is a Hotfix that will change the default timeout of the Splwow64.exe.