Hi,
The WSUS sync with upstream server starts fine and all of a sudden fails in the middle after processing some data with the following error:
Sync failed: Unknown: IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host~~at System.Net.ConnectStream.Read(Byte[] buffer, Int32 offset, Int32 size). Source: Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WSyncAction.WSyncAction.SyncWSUS