Hp All Questions
Press and hold the "Wireless" button on the printer control panel for at least three seconds, or until the wireless light begins to flash. Press and hold the "WPS" button on your wireless router for several seconds. Your printer will automatically search for the wireless network and configure the connection.
When you encounter the error HP printer validation error, it usually means that there is some obstruction in the printer or that the device carriage does not move freely. There are several ways you can fix the error. On the one hand, simply restart all your devices by disconnecting the power.