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According to our tests the latest Windows 10 and 11 updates fixed this isse and our old drivers install without problem.

Thank you for your reply. I will therefore update Win10 in the next few days and come back to confirm if this is no longer a problem on my computer.

I'm sorry, but no, the problem is not solved.

I spent more than 2hr uninstalling, reinstalling, updating, etc. and nothing works, the problem still persists.
Windows 10 (with its latest updates) still declares that the driver is not secure and UCCNC only offers to start in demo mode.

I will try with another computer in the next few days. Anyway, the problem still persists, maybe only for certain configurations, but it still persists. I will know more in a few days.

Nobody else has this problem anymore with the latest Windows updates, so it is strange.

Okay, sorry, it's my fault. I had updated Windows, reinstalled uccnc and the driver for the uc100 interface and uccnc still continued to launch in demo version.

That being the case, I decide to check for updates again and then I think of looking at the facultatives updates. Good pick ! windows then offered me a driver for the uc100 and since its installation, everything works like a charm!

So if you happen to come across this topic with the same problem, remember to check for facultative/optional windows updates and install the dirver for the UC100.

And, of course, thanks to the uccnc team for their technical support!

Was there ever a solution to this issue, I am having a similar problem with Windows 11

Also waiting for the update, every time I start the UC100 i need to reboot with digital signatures disabled.