Below steps to follow resolved Access Denied issue in Magento.
- Log out from the Magento admin area and then log in again.
- If the above solution does not help, reset the admin privileges. You can do this through the Magento admin area > System > Permissions > Roles > Administrators.
- Make sure that Resource Access is set to All.
- Click on the “Save Role” button and the permissions will be reset.
