When you connect to AdBlock VPN, you're creating a point-to-point connection (or a tunnel) between your device and our VPN servers. This allows your device to create an encrypted connection with our servers, which in turn forwards that encrypted data to the website servers.
This means your device may be temporarily considered "excluded" from your local network while connected to your secure VPN tunnel. Because of the way a device connects to a VPN, you may not be able to connect to local network devices, such as your printer. This can also prevent local email clients like Outlook and Thunderbird from sending and receiving email.
Allow local access network (Windows and Android)
If you're on Windows or Android, you can resolve this without disconnecting from the VPN. AdBlock VPN includes the Allow local access network (LAN) setting that keeps your local network accessible while you stay connected.
Other platforms
On other platforms, the workaround is to temporarily disconnect from your VPN any time you need to use local network devices or a local email client.