Resetting your HP smart app can also troubleshoot hp printer status unknown error, to know how you can resolve this error follow the below steps:
First, press the Windows key + I in order to open the Setting app.
Secondly, click on apps and select Installed Apps.
Third, locate HP Smart, then click on the displayed result and select Advanced option.
Fourth, in the next window, you need to scroll down in order to locate the reset button.
Fifth, click on the reset button to reset the HP Smart App.
Windows will provide you with a built-in repair tool that diagnoses and helps in fixing malfunctioning applications. If this function does not resolve your hp printer status unknown error, try resetting the app.