Hi, there is no ongoing maintenance or error logs relating to this deployment on Foundry. It is possible a proxy between your machine and Foundry has received an unexpected response or is misconfigured. I’ve found this same error message on the following page: https://success.skyhighsecurity.com/Skyhigh_Secure_Web_Gateway_(On-Prem)/Secure_Web_Gateway_Product_Guide/Supporting_Functions/Next-Hop_Proxies/TCP_Health_Check_for_Next_Hop_Proxy/Troubleshooting_TCP_Health_Check, which suggests it might be coming from one of such gateways.