SHA-2 code signing is required, so Windows 7 and even Windows 7 SP1 will not work until updated to cope with drivers signed with this new method, such as Elektron Overbridge. The following hotfixes address this issue.
Security Update for Windows 7 for x64-based Systems (KB4474419):
windows6.1-kb4474419-v3-x64.msu is definitely required.
Servicing Stack Update for Windows 7 for x64-based Systems (KB4490628):
Windows6.1-KB4490628-x64.msu may also be required.