Thanks for your replies. I tried yours mentioned Network device removal (including drivers), reboot, OpenVPN reinstall. The issue happen even in safe mode. But i think i discovered that it does nto happen when i reboot computer, hitting Shift+F8 key after bios, right before OS boot menu, and it shows extended boot options and i select one named "Disable driver signature enforcement".
But on normal boot it fails again, even i tried to disable driver signatures like this:
clicks start, type cmd, right click and select to run as admin. Paste and execute (Enter) following two commands:
bcdedit -set loadoptions DISABLE_INTEGRITY_CHECKS
bcdedit -set TESTSIGNING ON
I am wondering how to disable signature enforcement now. I am having old OS (W7) so maybei would need to install older TAP driver? Or find out how to disable that signature checking. Ideas?
btw Event viewer shows:
Kernel PnP
The driver \Driver\tap0901 failed to load for the device Root\NET\0000.
btw2. driver appears not signed: