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Try resetting the printer to factory settings, updating the firmware, and also make sure that there are no issues with tray 2. Then uninstall and reinstall the printer in Windows 7.
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What application are you using to print PDFs? Is it Acrobat Reader or something else?<br />
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both machines printer settings are set the same
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Check the printer default settings, from Printer Properties &gt;&nbsp;Advanced tab &gt;&nbsp;Printing Defaults button.
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No comment has been added to this question in more than 21 days, so it is now classified as abandoned.<br />
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I have recommended this question be closed as follows:<br />
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Accept: grnow (<a href="https:#a42355438" rel="ugc">https:#a42355438</a>)<br />
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seth2740<br />
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had a HP M402dn printer setup as a network printer. when printing pdf from a windows 7 machine, the printer LCD will tend to show error unexpected paper size, load executive in tray 2. When print from a windows 10 machine, will not have these kind of errors. both machines printer settings are set the same.
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had a HP M402dn printer setup as a network printer. when printing pdf from a windows 7 machine, the printer LCD will tend to show error unexpected paper size, load executive in tray 2. When print from a windows 10 machine, will not have these kind of errors. both machines printer settings are set the same.

HP M402dn printer unexpected paper size load executive in tray 2

A printer is a peripheral which makes a persistent human readable representation of graphics or text on paper or similar physical media. Traditional printers are being used more for special purposes, like printing photographs or artwork, and are no longer a must-have peripheral; 3D printing has become an area of intense interest, allowing the creation of physical objects. An image scanner is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image. Hand-held scanners, where the device is moved by hand, have evolved from text scanning "wands" to 3D scanners used for industrial design, reverse engineering, test and measurement, orthotics, gaming and other applications.

Printers and Scanners

Windows 10 is a personal computer operating system featuring the "universal application architecture" (UAP); apps can be designed to run across multiple devices with nearly identical code, including PCs, tablets, smartphones, embedded systems, Xbox One, Surface Hub and HoloLens. Windows 10 also includes a virtual desktop system, a window and desktop management feature called Task View, the Microsoft Edge web browser, support for fingerprint and face recognition login, voice-based search (Cortana), new security features for enterprise environments, and DirectX 12 and WDDM 2.0 to improve the operating system's graphics capabilities for games.

Windows 10

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.

Windows OS

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

Windows 7 is an operating system from Microsoft. Features include multi-touch support, a redesigned Windows Shell with a new taskbar, referred to as the Superbar, a home networking system called HomeGroup, and performance improvements.