About digital signature of BONE_D64.exe

Since we are using Debian 8.3, we are using BONE_D64.exe.
Cannot upgrade from Debian 8.3 to Debian 9.9 due to system reasons.
BONE_D64.exe has a digital signature validity period of 2018/9 / 13-2019 / 9/13.
The driver cannot be installed on a Windows 10 PC because the expiration date has passed.
Is the validity period of the digital signature not updated?