This article provides solutions to error messages that you may encounter when mapping drives in Synology Assistant.

• Error code 53: Network path not found
• Error code 384: SMB1 not available
• Error code 1312: No such login session

Error code 53: Network path not found

This message may appear due to incorrect configuration. Please check each of the settings below:

• Make sure SMB service has been enabled on your Synology NAS.
  1. Sign in to DSM using an account belonging to the administrators group.
  2. Make sure the Enable SMB service option is ticked at the following locations:
     • For DSM 7.0 and above: Go to Control Panel > File Services > SMB.
     • For DSM 6.2 and earlier: Go to Control Panel > File Services > SMB/AFP/NFS > SMB.
• If firewall has been enabled, make sure firewall on your Synology NAS and Windows computer have been set to allow SMB access (i.e., ports 137, 138, 139, or 445 are NOT blocked).
  • Go to Control Panel > Security > Firewall > Firewall Profile > Edit Rules > Ports > Select from a list of built-in applications > Select and make sure Windows file server (or ports 137, 138, 139, or 445) has not been selected and set to Deny. For more information on how to set up firewall, refer to this article.
• Make sure Windows client has enabled Client for Microsoft Networks on the Ethernet adapter. On your computer, go to Settings > Network & Internet, click Change adapter options, right-click on the network connection, and select Properties. In the window that appears, make sure Client for Microsoft Network is ticked. If this was not enabled, click Install below to install "Client for Microsoft Networks" and reboot your computer.

Error code 384: SMB1 not available

Try either of the following:

• Either SMB2 or SMB3 should be enabled on Synology NAS. Sign in to DSM using an account belonging to the administrators group. Make sure either SMB2, SMB2 and large MTU or SMB3 is selected in the Maximum SMB protocol field at the following locations:
  • For DSM 7.0 and above: Go to Control Panel > File Service > SMB, click Advanced Settings.
  • For DSM 6.2 and earlier: Go to Control Panel > File Service > SMB/SFP/NFS, click Advanced Settings.
• Make sure SMBv1 support is enabled on Windows. SMBv1 is not enabled by default on Windows. If you wish to deploy SMBv1, please enable it on Windows. For more information on how to do so, refer to this article.

Error code 1312: No such login session

Try either of the following:

• Make sure you are signing in to your Windows computer using your account name and password. If you have implemented one of Windows Hello sign-in options (facial recognition, fingerprint, or PIN), refer to this article.
• Try "net use" to mount the drive directly. For more information on how to do so, refer to this article.