(55): The specified network resource or device is no longer available
This is a Windows error message usually given when there are problems with the network or network adapter.
If you get this device when using an external USB drive the following article may help:
One user reported getting this error with an eSATA device in a docking station. It seems to have been related to a bespoke AHCI driver used in/by a recently-installed storage manager (in that particular case, Intel Matrix Storage Manager software, but others may exhibit the same behavior). Once that software was uninstalled, the problem was resolved. This information is provided on an 'as is' basis, without prejudice, as we have not tested nor replicated here.