In Insert tab > Click Office Add-ins button to load Office Add-ins store.
In My ADD-INS, you will find Secured Signing for Word, mouse hover it, then click the ...
Click Remove menu item.
Confirm to remove by click remove button in the popup
Click Refresh link to force plugin to be cleaned from current environment.
In Insert tab > Click My Add-ins button to load My Add-ins popup.
In My ADD-INS list, you will find Secured Signing for Word, mouse hover it, then click the ...