First, try to disable and re-enable the TAP adaptor by going to Control Panel -> Network and Sharing Center -> Change Adapter Settings -> One of the local area connections will have an undername TAP-Windows Adapter v9 -> Disable it and re-enable -> Try to connect again.
If the issue persists, you can reinstall your TAP drivers by downloading them from https://swupdate.openvpn.org/community/releases/tap-windows-9.21.1.exe
