HP Printer prints only portraits

[Danielj]

After Windows 10 version 1803 update, my HP Designjet 510 24in prints only portraits. We use a Windows 10 PC to Windows XP PC to printer.

 

[Trouble]

It might be worth your time, if you haven't already, try updating the driver on the Windows 10 machine to this one
HP DesignJet 510 HP-GL/2 Full Feature Installer

Version: 1.40.810.100 Release date: Feb 27, 2018
https://support.hp.com/us-en/drivers/selfservice/hp-designjet-510-printer-series/3737526

To avoid complications and confusion it might be a good idea to remove any older drivers by uninstalling the existing printer first and then reinstalling it from scratch using the updated driver.

 

[Bighorn]

If I may, there may be a slight conflict between Win10 64-bit and WinXP which only the Pro version was available as 64-bit, sometimes makes a difference in drivers used.