Fix for DSM 5.0 and 5.1 updates failing on Synology NAS

For the past several months I have been receiving regular e-mail notifications from my DS213+ that a system update is ready to be applied, I’d proceed to open Control Panel > Update & Restore with an Administrator level User account and hit Update. Nothing would happen…

Here’s the fix straight from Synology Support which is not mentioned on any well ranked forums or posts when searching for this error. I’ve pasted the original from Synology Support as well as an English-friendly version.

If you have updated your NAS to DSM 5.0 and above there is no security/malware concern to be worried about. If you are receiving e-mail notifications that a new system update is available but it does not appear on the Update & Restore screen please do the following:

  1. Open Control Panel > Network as an Administrator level User account
  2. Under the DNS options on this screen set the following primary and secondary DNS entriesPrimary: 8.8.8.8
    Secondary: 8.8.4.4
  3. Click Save Changes
  4. Open Control > Update & Restore and click Update Now

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Original response from Synology Support:

If you have managed to update system to DSM 5.0 there has security concern that needs to be worried. On the other hand regarding e-mail you received has a new software for update but no update was available on system, please apply Google DNS 8.8.8.8 or 8.8.4.4. for your DiskStation under Control Panel > Network > General (Preferred DNS Server) for changes to take effect. Then, check if the issue resolves then. – Technical Support, Synology

Update: This post seems relevant for DSM 5.1 users too…

Photo Station connection error with DSM 4.3

For new users setting up a DiskStation instance getting packages to play nicely with the DSM firewall is a little tricky. By default all ports in use by existing packages are disabled when the DSM firewall is enabled and on the first instance that each is used again you are notified with a prompt to allow future use, the problem is that this only happens when you re-start each service or after a system reboot. Here’s the fix.

  1. Connect to the Administration of your Synology Diskstation as an Administrator group user (e.g. admin)
  2. Open Package Center from the Main Menu
  3. From the Installed list select Photo Station
  4. Under the Actions dropdown select Stop, wait until the Status changes to Stopped
  5. From under the Actions dropdown again select Start

That’s it, open Photo Station from your browser!

Fix for “Failed to connect to the target server.” error notice within Data Replicator 3

If during first time setup you have enabled the DSM 4.3 firewall on your Synology Diskstation then connecting Windows services (e.g. Data Replicator 3, Cloud Backup, Install Assistant, etc.) requires you to open those ports so that the two can communicate, this is why likely why you’ve run into the famous “Failed to connect to the target server. Check the network or server setting” error message when setting up Data Replicator 3. Here’s the fix:

  1. Connect to the Administration of your Synology Diskstation as an Administrator group user (e.g. admin)
  2. Open Control Panel > Firewall and QOS within the Network Services group
  3. Within the Allow / Deny tab ensure that the entry starting with “Synology Assistant, etc.” is enabled with Protocol set to All, Source IP set to All and Action Enabled
  4. Save changes
  5. Connect to your DiskStation via Data Replicator 3

That’s it!