T23G Auto Provisioning Issues

[Billyy]

I have been trying to set up a provisioning server for our Yealink phones and have had some success but I can't get the T23G phone I have to provisioning. I've managed to get a T26P, T21P E2, and T29G phone to connect to the server and download their respective configuration files, but while the T23G can reach the server it can't download any config files.

They all have the same auto provisioning configuration: IP Address, User, Password, Certificate, Certificate settings, and the T23G has the latest firmware but for some reason it does not want to provision. This is the first time I've set up anything like this and it's been quite challenging building it all from scratch so any help would be appreciated.

I've attached a pcap and level 6 log file, as well as a few screen shots of my configuration. Also I noticed on my server logs (IIS 10.0) that the same HTTP error keeps appearing (500 - Internal server error) and the same Windows error (64 - The specified network name is no longer available)


Thank you