I have the same Issue... normal VPN is working.. as soon i activated split tunneling .. connection is blocked..Im using proton VPN..
Windows diagnosticas show following in chrome
Details zu Netzwerksicherheit Diagnose:
Einstellungen, die möglicherweise die Verbindung blockieren:
Anbietername: Kaspersky Lab Provider
Anbieterbeschreibung: Kaspersky Lab WFP Traffic processing filter Provider
Filtername: Kaspersky Lab WFP Traffic processing filter cbr ALE_AUTH_CONNECT_V4 filter
Anbieterkontextname: -
disabling kaspersky security doesnt help.. only when i completly close kasperksy VPN split tunneling behaves normal again ..
seems this issue came with the last kaspersky update..