Zen Reports has offered multiple choices for direct printing including use of Adobe Reader or Foxit reader. Recent changes in Windows 10 and in the readers themselves have made it no longer possible to invoke these readers from background processes in Windows 10 and all future versions. Because of this Zen Reports will no longer support printing with these tools on Windows 10.
Windows 10 support was added for 2015.1 and 2015.2. On Windows 10, the only option for direct printing with Zen Reports will be Qoppa JPDFPrint.