Sometimes the HP printer stop printing with the error message "unexpected paper size in tray 2 or tray 1". The cause of this error message is, the paper size for printing which you have configured into your printer tray 1 or tray 2, that is conflict with the paper size which you provide for printing. Mean, you have configured your printer tray with "A4" paper for printing but you put "LEGAL" paper into the tray. For solving this issue, you have to choose the correct paper size into the tray. If you wanna print with "A4" paper then you have to select paper type "A4" as like as you can choose "legal" paper as your requirements. You can change this settings directly into the printer using printer screen panel or "Devices & Printers" option under the "Control Panel" from computer. Just go to the "Devices & Printers" option and then select your printer. Then Right click your printer driver and then select "printer properties". Now navigate to "Device setting" option. Now change the paper size into "tray 1" or "tray 2" field as your preference. Just as follows....
Options to configure the output paper size are also available at different locations depending on the model of the printer. In some printers, you will find it in the "Advanced" button located at the "Printing Preferences" configuration option.
Hope the problem will be solved now.
Thank you.
Thank you.