Hi, this is a bug which should be fixed in Firefox 85 (scheduled for release on 26th January.) https://bugzilla.mozilla.org/show_bug.cgi?id=1666072 but to correct it now, type '''about:config''' into the address bar, press Enter and accept any warning, then copy and paste the following into the search box '''network.captive-portal-service.enabled''' Now on the search result, click the Toggle button at the right-hand end to change from True to False. You may need to restart Firefox to implement the change. More - see under the Network Detection heading in [[How to stop Firefox from making automatic connections]]. ''If your question is resolved by this or another answer, please help other users by marking the best reply as Solved. Thank you!''