The port used by the openvpn service is already in use

1. What port is used by OpenVPN?
2. How do I fix OpenVPN error?
3. How do I change the OVPN port?
4. Can I use port 443 for OpenVPN?

What port is used by OpenVPN?

By default, OpenVPN Access Server comes configured with OpenVPN daemons listening on UDP port 1194 and TCP port 443. Access Server's web services also use TCP 443 for the web interfaces.

How do I fix OpenVPN error?

The solution is to set up a proper DNS name and configure that and save settings. Then uninstall, redownload, and reinstall the connection profile or OpenVPN Connect Client program and to try again. Another common mistake is to forget to open the 3 ports required for OpenVPN Access Server to be reachable properly.

How do I change the OVPN port?

For Windows, macOS, Linux, iOS, and Android:

Click the Settings / Preferences button. Go to the Connection tab ( VPN protocol on mobile clients). Select a different Port/Protocol combination. Retry the connection and repeat steps 1-4 as necessary.

Can I use port 443 for OpenVPN?

Port Forward OpenVPN through TCP port 443

By far the simplest method, one that can be easily performed from your (the client) end, requires no server-side implementation, and will work in most cases, is to forward your OpenVPN traffic through TCP port 443.