Error when connecting to Transmission

When I have Transmission or BTSync download to a specific folder on my C: drive, I get the following Error. Even happens when manually syncing dronefactory folder. It pops up and disappears completed without actually getting anything.

Task Error: Unable to connect to the remote server

System.Net.WebException: Unable to connect to the remote server —> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:38081
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)
— End of inner exception stack trace —
at NzbDrone.Core.Rest.RestSharpExtensions.ValidateResponse(IRestResponse response, IRestClient restClient) in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\Rest\RestSharpExtensions.cs:line 0
at NzbDrone.Core.Download.Clients.Transmission.TransmissionProxy.GetSessionId(IRestClient client, TransmissionSettings settings) in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\Download\Clients\Transmission\TransmissionProxy.cs:line 203
at NzbDrone.Core.Download.Clients.Transmission.TransmissionProxy.ProcessRequest(String action, Object arguments, TransmissionSettings settings) in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\Download\Clients\Transmission\TransmissionProxy.cs:line 214
at NzbDrone.Core.Download.Clients.Transmission.TransmissionProxy.GetConfig(TransmissionSettings settings) in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\Download\Clients\Transmission\TransmissionProxy.cs:line 103
at NzbDrone.Core.Download.Clients.Transmission.Transmission.GetStatus() in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\Download\Clients\Transmission\Transmission.cs:line 152
at NzbDrone.Core.HealthCheck.Checks.ImportMechanismCheck.b__0(IDownloadClient v) in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\HealthCheck\Checks\ImportMechanismCheck.cs:line 25
at System.Linq.Enumerable.WhereSelectListIterator2.MoveNext() at System.Collections.Generic.List1…ctor(IEnumerable1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source)
at NzbDrone.Core.HealthCheck.Checks.ImportMechanismCheck.Check() in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\HealthCheck\Checks\ImportMechanismCheck.cs:line 25
at NzbDrone.Core.HealthCheck.HealthCheckService.b__0(IProvideHealthCheck c) in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\HealthCheck\HealthCheckService.cs:line 56
at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext() at System.Collections.Generic.List1…ctor(IEnumerable1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source)
at NzbDrone.Core.HealthCheck.HealthCheckService.PerformHealthCheck(Func2 predicate) in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\HealthCheck\HealthCheckService.cs:line 55 at NzbDrone.Core.HealthCheck.HealthCheckService.HandleAsync(ConfigSavedEvent message) in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\HealthCheck\HealthCheckService.cs:line 77 at NzbDrone.Core.Messaging.Events.EventAggregator.<>c__DisplayClass31.b__0() in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\Messaging\Events\EventAggregator.cs:line 72
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()

Nothing has changed on my system, including firewall settings.

Sonarr can’t connect to transmission.

Is that the port transmission is running on? If not you may have a virus that is injecting a proxy into your system and causing issues, there are a few threads on these forums about it with some suggestions on what tobtrh to remove it.

Well, somehow transmission resorted to default setting while keeping the seeds. Thank you for pointing me in the right direction. I guess now I have to research how Transmission reset itself so it don’t happen again. Again, thanks.