I don’t have Windows 7 Enterprise X64 under hand, but I’ve tested 3.2.32 on Windows 7 x64 retail with all latest updates, and it works ok.
However, there is one key difference in driver signing between 3.2.7 and 3.2.32:
3.2.7 drivers for Windows 7 are signed using SHA-1 Code Signing certificate, while 3.2.32 with SHA-256 EV Code Signing certificate.
Please note, that SHA-1 code signing certificates are no more available for ordering and the latest Windows Packet Filter version signed with SHA-1 Code Signing certificate was 3.2.29. You can get this version using the links below:
Windows Packet Filter 22.214.171.124 x64.msi
Windows Packet Filter 126.96.36.199 x86.msi
Alternatively, you could install the required update from the list below to add SHA-256 support to your OS: