About a year ago i made a post here where i was having the same problem, which randomly resolved its self after a windows update and pc restart. That is not the case this time. I recently decided to try using the server again after a long time of not using it and it no longer allows me to connect. I've enable port forwarding, I've updated Calibre, I've tried various different browsers and 3 separate devices (including mobile) and I CANNOT access the server on anything other than the pc it is hosted on, every time i try it times out, or just loads indefinitely. I followed the Guide on the official Calibre site (
https://manual.calibre-ebook.com/server.html) making sure both programs were allowed through my windows firewall, to no avail. I really can't think of
why it would be acting like this over a LAN connection. Any help or advice would be greatly appreciated!