allora ho provato ad inserirlo qui:

codice:
Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox8.CheckedChanged
if checkbox1.ckecked = true then
checkbox2.enabled = False
End if
        
    End Sub

anche qui:

codice:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
if checkbox1.ckecked = true then
checkbox2.enabled = False
End if