What’s the point of creating a form if anyone having access to the file can easily modify it? To protect your template from unwanted changes, move to Protect section in the Developer tab and select Restrict Editing . A new menu will pop-up, letting you choose Filling in forms option from the drop down menu. Now click Yes, Start Enforcing Protection to protect your form from unauthorized access. You will be asked to type in a password. However, if you don’t want to password-protect the form, simply ignore it by clicking OK and you’re done!