I'm sorry, I'm wrong. I thought this was the cause of the problem and indeed, it did fix my issue booting up defeating driver signing enforcement. However, this morning I swapped out my passive USB hub with a decent powered hub. This has fixed everything properly for me and I no longer need to bypass driver signing enforcement.
Apologies to Access for my misinformation.
I should have worded that better. Yes, the driver is signed. But the Kempler GmbH signing authority certificates that got installed with the driver have expired. You can see this under your Trusted Publisher certificate store.
I've encountered this this evening on Windows 7 x64. The driver isn't signed which is why Windows is refusing to let it run correctly. In the case of Windows 7 I have to boot whilst pressing F8 and selecting the 'Disable driver enforcement' option on the Windows boot menu.
Windows 8 and Windows 10 allow you to do this in a more permanent fashion (Windows 7 I have to do it on every reboot). You can read more about this here: https://windowsreport.com/driv…e-enforcement-windows-10/
good luck!
Rob
