The following error is received in UDT:
There was no response from the UDT Service Engine located at "Server: 'XXXX' Port: '17777' EngineID: 'X'"
UDT 3.2.2 HotFix 2 or any HotFix that replaces the Solarwinds.UDT.BusinessLayer.dll file.
When the dll is downloaded from a browser and then replaced in Windows Explorer through copy and paste, the dll becomes blocked.