You are experiencing connection problems when accessing your Synology NAS via your local network, such as through DSM, file services, or PING.

• Check the status of the Power LED indicator
• Check the connection of your Synology NAS to the local network
• Check if your Synology NAS becomes unresponsive

Check the status of the Power LED indicator

1. The Power LED indicator is off: This means that your device is off. Boot up your Synology NAS. If you cannot boot it up, there could be an issue with the power, adapter, or other hardware issues. Please contact your local reseller for RMA service if your Synology NAS is still within its warranty period.
2. The Power LED indicator is flashing: This means that the device is powering on or powering off. Wait for half an hour before trying to connect to the device again. If the Power LED indicator keeps flashing, unplug the device and plug it back in before powering on the device again. If the problem still remains, refer to this article for troubleshooting.¹
3. The Power LED indicator is on: This means that the device is powered on. If you still cannot access your Synology NAS, it could be due to network issues. Proceed to the following section to resolve this issue.

Check the connection of your Synology NAS to the local network

1. Make sure that the LED indicators of the connected LAN ports on your Synology NAS are flashing properly.²
2. Make sure that the LED indicators of your switch or router are flashing properly.
3. Run a PING command to check the connectivity between Synology NAS and your computer. Refer to this article for more details.
4. Find your Synology NAS using either of the following methods. If you cannot find your device using either of these two tools, refer to this article.
   • Web Assistant: Enter find.synology.com into the address bar of your web browser.
   • Synology Assistant: This desktop utility can be found at Download Center > select your Synology NAS model > the Desktop Utilities tab.
5. In Web Assistant or Synology Assistant, you will be able to see all of your Synology devices and their statuses.³ Refer to the list below for more information.
   • Not installed: Do not proceed with the installation, or else all of your data will be deleted. If you need to retrieve your data from your drives, refer to this article.
   • Configuration lost/Migratable: The data in the shared folders will not be deleted after you reinstall DSM.
   • Ready: The system has been successfully installed and is ready to use.
   • Connection failed: There may be an issue with the network connection of your Synology NAS. To reset the settings of your NAS, press the RESET button for four seconds until you hear a beep.^{4 5} To learn more about how to reset your Synology NAS, refer to this tutorial for DSM 6.2.3 and below and this tutorial for DSM 6.2.4 and above.

Check if your Synology NAS is unresponsive

If your Synology NAS is still unresponsive after trying the methods above, refer to this article for further troubleshooting.