"start enforcing protection" is greyed out -word 2007

[Bob Arnett]

In Word 2007, On the I click on the Protect Document button and then put a
check mark in the "Allow only this type of editing" check box and select the
"Filling in Forms" type. .... but .... the "Yes, Start Enforcing Protection"
button is greyed out and I cannot complete the protection process. Why is
this greyed-out and how can I select the button?

 

[Jay Freedman]

In Word 2007, On the I click on the Protect Document button and then put a
check mark in the "Allow only this type of editing" check box and select the
"Filling in Forms" type. .... but .... the "Yes, Start Enforcing Protection"
button is greyed out and I cannot complete the protection process. Why is
this greyed-out and how can I select the button?

If the Design Mode button on the Developer tab of the ribbon is turned on, click
it to turn it off.