Had an issue today where our old IP5550 consoles decided that they wouldn’t communicate with the software on our reception PCs. Looking through the logs, this was the only error I could find:

The TKB has failed to connect to or has lost connection with the IP console application

As it happened, I’d just built a Windows 10 PC and installed the 5550 software. I thought that some incompatibility with W10 was the cause of my issues, but then the second console with software on a Windows 7 PC also decided to flake out.

The solution, after all of my troubleshooting, was to pull the power plug on both of the IP consoles and then plug them back in again. So basic that I should have thought of it earlier.