This can happen on some newer security patches. You may need to use the "Remove FRP New Security" option in the tool.
While the SamFw tool is heavily utilized within consumer repair environments, always adhere to proper data ethics and device care practices: samfw frp tool 3.1 - remove samsung frp one click download
Download the (or the latest available version from samfw.com ) on your Windows computer and install it. Step 2: Install Samsung Drivers This can happen on some newer security patches