try this
uninstall virtual network adapter then install new one then delete old
1.open any browser na ginagamit mo then go to setting> open proxy settings> lan settings> check Automatically/ detect settings.
2nd method kung ayaw parin go to setting on your windows settings>update & security> trobleshoot? run the troubleshooter.
3rd method pag ayaw parin go to settings>network & internet> status> network reset