Turner Onner - Can't connect to IP address

Hm... I haven't seen that happen before. @Dirk might have some other ideas? One other thing I would have you check is whether you can "ping" the NodeMCU by its IP address. This is done using a command shell (i.e. Start > Run > cmd in Windows, term in MacOS and Linux) to execute something like: ping 192.168.1.23. If you can ping it, you should be able to navigate to http://192.168.1.23 in a browser.