What should I do if there is an error sign of VPN Server (PPTP) or VPN Server (OpenVPN)?

Applied Models:
Answer:
Once your VPN Server (PPTV) or VPN Server (OpenVPN) shows that there is an error, it means that there is a conflict with another NAS about the service. If you were to enable the VPN feature on one NAS, please disable the VPN feature on other NAS units. If you still encounter the VPN server connection error, please contact us via helpdesk.qnap.com.