I have not tested this but i took this from a previous post. I did not get
the author
To disable the Esc key in an Access form, open your form in design view.
Set the form's property called "Key Preview" to Yes.
Then select the property called "On Key Down" and click on the button with
the three dots to the right.
When the Choose Builder window appears, highlight Code Builder and click on
the OK button.
Next, paste in the following code:
If KeyCode = vbKeyEscape Then
KeyCode = 0
End If
Now, the Esc key should be disabled on your form.