I am trying to Netfile my Quebec return. It is rejected because "form TP80 is open". I have no business income -all fields on TP80 are zero. How can I close the form?

Please try closing the T2125 first. In Forms mode, go to the T2125, select Edit>Forms>Clear Current Form, and then Edit>Forms>Close Unused Forms. Then repeat for the TP-80, and Schedule L.

Thank you very much.  That worked great.  (Schedule L was not open so I did not try to clear and close it.)