Connection refused after installing DSM 6.0 Beta

After installing the newly released DSM 6.0 beta for Synology NAS, I was unable to reach the DSM again. My Chrome browser showed “Connection refused”. Not really a good start for beta testing new software. connection-refused

Luckily SSH is still up. Since DSM running on nginx, it’s straightforward to look for some error log in the nginx error log.

shows following log records

in the file /usr/syno/etc/ssl/ssl.chain.crt/server.crt I found a weird certificate formatting

There’s a missing newline between the chained certificate. Put a new line between the certificate and restart nginx.

and restart nginx

Tadaaaa… DSM is available again.

4 thoughts on “Connection refused after installing DSM 6.0 Beta”

  1. Hi how do you edit the cert file and after how do you save changes, i’m a noob at ssh, can you give me step by step instructions please :)

    1. Hi Scott, have you ever activated Terminal/SSH service in DSM before? are you on Windows or Mac/Linux? if you’re on windows, search for putty. If you’re on Mac/Linux run Terminal. Then try to run following command in Putty or Terminal

      ssh root@SYNOLOGY_IP

      if it works, it will ask for you password. The password is the same with the password of admin user.

      If you don’t have Terminal/SSH service activated on DSM, then please see

      1. hey thanks for getting bck, I’v been on syno forum and get how to open the ssl file but I don’t know how to save it after modifying it :(, at the min all I have is the synology ssl on my nas on 5.2 I had a startssl that worked perfectly, I want to re apply this cert, but afraid I get error again on gui, I have ssh enabled

Leave a Reply

Your email address will not be published. Required fields are marked *