Synology: Failed to Renew Let’s Encrypt Certificate
Have you ever tried to manually renew your Let’s Encrypt certificate on your Synology NAS and received the following error message on DSM 6.2.4? Failed to connect to Let’s Encrypt. Please make sure your DiskStation and router have port 80 open to Let’s Encrypt domain validation from the Internet. All the other communications with Let’s … Read more about Synology: Failed to Renew Let’s Encrypt Certificate