The share is currently offline or does not exist
SpeedCommander 20 includes a new feature for detecting unavailable network drives. Before accessing them, they are briefly pinged to avoid waiting time in case of unavailability. If the ping is unsuccessful, an error message is displayed.
The offline check can be completely disabled in the settings dialog on the Advanced – Tweaks page by setting the NetDriveOfflineCheck option to No. SpeedCommander 20 (or higher) will then behave as in previous versions.
However, you can also add individual servers to the exception list using the NetDriveOfflineCheckExclude option. To do this, activate the log categories Info and Shell at the very bottom of the same page of the settings dialog. After restarting SpeedCommander, a file named SpeedCommander.log is created in the SpeedCommander settings directory. After attempting to access the share or server, this file contains entries with the CxPingServer function:
SHELL [*] [CxPingServer@XX] Looking for NETSERVER
Here you will find the problematic network name (in the above example, NETSERVER), which you can then add to the exception list under NetDriveOfflineCheckExclude. If you specify multiple server names, they must be separated by semicolons.