Orient saw a lot of ball during a slow start in which neither team could find much by way of penetration.
Forde whipped in a corner and Tom Bradshaw got up well to get on the end of it, but the striker could not get enough power on the header and it was cleared.
A neat passage of play from Walsall before the break then ended with Forde putting the ball just over the crossbar.
After the restart, Forde wasted a great chance to put Walsall in front after backheeling the ball wide from five yards.
Neither side could find the breakthrough, however, in a 0-0 League One stalemate.