In our BSP all drivers are test signed currently with whatever certificates are supplied in Program Files(x86)\Windows Kits\10\tool\certificates folder. Some of these certificates expired 2/1/2022 and now PackageGen fails and we can no longer build an FFU. Where do I find the new certificates? I already tried Update for Windows OEM HAL Extension but this does not fix our build issue. I am not experienced with how certificates work or what to do. Can anyone help? We use Visual Studio 2017 for building our BSP.