these are logs for my problem
thank you for helping
regards
2018-12-28 10:27:45.7527|TRACE|48|Net.Pranas.SqlBak.Tools.Wcf.WcfExtensions|CloseClient. The channel client has closed
2018-12-28 10:27:45.7527|TRACE|48|Net.Pranas.SqlBak.Tools.Wcf.WcfExtensions|UsingA. Return
2018-12-28 10:27:45.7527|DEBUG|48|Net.Pranas.SqlBak.Destination.Folder.FolderConnection|DoOpenConnection. Path: “\VBOXSVR\SharedFolder\backup_SQL”
2018-12-28 10:27:45.7527|TRACE|48|Net.Pranas.SqlBak.Destination.Folder.FolderConnection|DoOpenConnection. Connecting to network shared folder… ShareName: “\VBOXSVR\SharedFolder”; UserName: “”; PasswordLength: “0”
2018-12-28 10:27:45.7527|TRACE|48|Net.Pranas.SqlBak.Destination.Folder.FolderConnection|DoOpenConnection. Mapping drive… Force: “True”; LocalDrive: “”; SaveCredentials: “True”; ShareName: “\VBOXSVR\SharedFolder”; Persistent: “False”; PromptForCredentials: “False”
2018-12-28 10:27:45.7527|DEBUG|48|Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2|ZMapDrive. Username: “”; PasswordLentg: “0”; Environment.UserName: “seva”; Environment.UserDomainName: “WINDOWS10”; Environment.UserInteractive: “False”
2018-12-28 10:27:45.7527|TRACE|48|Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2|ZMapDrive. Force drive unmapping…
2018-12-28 10:27:45.7527|DEBUG|48|Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2|ZUnMapDrive. Force: “True”
2018-12-28 10:27:45.7527|TRACE|48|Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2|ZUnMapDrive. Invoke WNetCancelConnection2A… ShareName: “\VBOXSVR\SharedFolder”; Flags: “0”
2018-12-28 10:27:45.7527|DEBUG|52|Net.Pranas.SqlBak.Context.Context.Data.RoutinesDatabaseHandler|LoadJobBackupLogRecords. Return: “Net.Pranas.SqlBak.Log.Trace.JobBackupLogRecord[]”
2018-12-28 10:27:45.7527|DEBUG|52|Net.Pranas.SqlBak.Context.Context.Data.RoutinesDatabaseHandler|LoadBackupObjectInfo. LocalBackupId: “27”
2018-12-28 10:27:45.7527|TRACE|48|Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2|ZUnMapDrive. WNetCancelConnection2A Result: “2250”
2018-12-28 10:27:45.7527|TRACE|48|Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2|ZUnMapDrive. Just trace the exception|System.ComponentModel.Win32Exception (0x80004005): This network connection does not exist
2018-12-28 10:27:45.7527|TRACE|48|Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2|ZMapDrive. Invoke WNetAddConnection2A function… NetRes: “Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2+StructNetResource”; Flags: “4096”
2018-12-28 10:27:45.7527|DEBUG|52|Pranas.Net.SqlBak.Service.SBF.DesktopAppService|LoadDeltaJobLogDetail. Return: “IsSuccess: True; Error: “”; Value: “SBF.Channel.Contract.DataContract.JobLogDetailDelta””
2018-12-28 10:27:46.6182|DEBUG|16|Quartz.Core.QuartzSchedulerThread|Batch acquisition of 0 triggers
2018-12-28 10:27:48.0196|TRACE|48|Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2|ZMapDrive. WNetAddConnection2A result: “67”
2018-12-28 10:27:48.0196|ERROR|48|Net.Pranas.SqlBak.Destination.Folder.FolderConnection|DoOpenConnection. System error on connecting to the folder destination|System.ComponentModel.Win32Exception (0x80004005): The network name cannot be found
à Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2.ZMapDrive(String psUsername, String psPassword)
à Net.Pranas.SqlBak.Destination.Folder.FolderConnection.DoOpenConnection()
2018-12-28 10:27:48.0196|ERROR|48|Net.Pranas.SqlBak.Destination.Core.ConnectionBase|Open|Net.Pranas.SqlBak.Destination.Core.DestinationException: [DST-1:1003#67] Failed to open “\VBOXSVR\SharedFolder\backup_SQL” destination connection. —> System.ComponentModel.Win32Exception: The network name cannot be found
à Net.Pranas.SqlBak.Destination.Folder.Network.NetworkDrive2.ZMapDrive(String psUsername, String psPassword)
à Net.Pranas.SqlBak.Destination.Folder.FolderConnection.DoOpenConnection()