I think this started happening recently, I don't have an exact time frame. I'm trying to auto provision a Yealink T42G, which I have done in the past without issue. I've tried doing it from the phone's web interface but nothing happens, so I tried to capture some logs. In the logs, I can see that a request was made to the correct server and the directory looks accurate. But it immediately fails with a 404 error. I'm not sure what exactly it isn't finding. If it helps to know, I'm running 3CX 15 SP2.