I could not get the full vpn to work from windows unless I recreated the google VM with a new network interface with "Forwarding = ON" about pi-hole-pivpn-on-google-compute-engine-free-tier-with-full-tunnel-and-split-tunnel-openvpn-configs

[jfrandol]

I had another comment but deleted it as it was my silly mistake of forgetting : redirect-gateway def1

[rajannpatel]

This is a great catch, something may have changed; I want to investigate further. I will pin this issue for now, in case it helps others.

[rajannpatel]

You seem to be on to something; I will update the docs shortly!

[rajannpatel]

I don't think you should have to do this, something else may be at play here. Are you able to confirm what your firewall rules look like? Also, what device are you setting up your VPN on (OS name, version, and VPN software name and version will be helpful here).

[rajannpatel]

https://github.com/rajannpatel/Pi-Hole-on-Google-Compute-Engine-Free-Tier-with-Full-Tunnel-and-Split-Tunnel-Wireguard-VPN-Configs

This guide walks you through running a script which will configure a Split Tunnel IPv6 Wireguard connection for your Android, iOS, Linux, macOS, & Windows devices. All you need to do is run a script, scan a QR code, and you're blocking ads with the current Pi-Hole version.

Your issue should be resolved if you try with Wireguard. A Windows Wireguard client can be found here: https://www.wireguard.com/install/