To post that it is an anti-virus/firewall issue when everyone is experiencing the same issue on windows PCs is just plain silly. To appease myself I have turned off my AV and firewall, used our test network with no restrictions on the firewall for both host and viewer. It still does not work.
Log extract
01-06-2022__14:28:21__132 InetConnection #942325. Internet connection to Uploader (178.162.214.240:5655).
01-06-2022__14:28:21__164 InetConnection #942325. Method "Connect" - OK. Uploader connected to ID server: 178.162.214.240.
01-06-2022__14:28:36__167 InetConnection #942325. Socket error. Name: "Uploader", host: "178.162.214.240:5655". Exception class: "EIdReadTimeout". Message: "Read timed out.".
01-06-2022__14:28:36__167 Connection #942325. Connection to "Uploader" failed. Mode: <Authorization>.
01-06-2022__14:28:36__168 Context #942325 removed. Mode: <Authorization>.