Load COM 10

All HP Printers...
 
This error indicates someone has sent an "envelope" job to the printer and the printer is now waiting for the envelope.
 
If you really are about to print an envelope, put one in the printer and then press the continue or go button.
 
If you do not want an envelope printed and just want the printer to continue on, then press the continue or go button. Turning the printer off and then on again will accomplish the same thing.