Hi Ton, You can also use pnputil.exe (in an elevated command prompt) to check version, uninstall, and/or install TAP driver manually. The pnputil is a stock command line utility for driver management on all Windows.
I advise you use pnputil to list all your installed TAP-Windows6 drivers - yes, there may be more than one version installed. Carefully uninstall all TAP-Windows6 drivers. "Carefully" in a sense that you pay extra attention to delete oem<nn>.inf entries corresponding to the TAP-Windows6, and not your graphics card or disk controller. Note that network interface settings are stored elsewhere in registry and uninstalling the driver will not delete them. Your TAP interfaces will just disappear for a while. You already noticed that phenomena before. Next, install the latest driver - you can use the official installer. Or - if you already have it installed - find a copy of the driver in C:\Program Files\TAP-Windows6\driver (your path may vary) and use pnputil to install the driver. Or - right click on the .inf file and select Install. Your TAP interfaces should reappear. Also, since you're troubleshooting, I'd strongly advise you to reboot in between. Best regards, Simon
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