If that didn't work I'd have to restart the MacBook. Other times I would have to clean my entire Android Studio project manually (delete all temp/cache folders such as: /build, /.gradle, /.symlinks, /Pods, run 'flutter clean' etc). Sometimes Force Quitting all Android emulators could fix it. However, with all of that disabled, I would still get the same issue occur at some point in the day. A bit pointless having Norton 360 installed at all by this point really.

So, once I figured all that out, I'd basically start my working day by turning off all Norton Firewall options and Scan options. And I also tried adding Connection Blocking exceptions to allow the Android Emulator process ‘qemu-system-x86_64’ to not be hindered etc. I had also tried adding Scan folder exceptions to ignore any of my Android Studio installation folders, SDK folders (Flutter SDK, Java SDK etc) and my development project folders. I also found it important to turn all that off before even starting Android Studio itself, else you could get an issue where after then opening an Android Emulator, the IDE would not connect to it and complain about some 'daemon' related error (the socket/port it talks to the emulator over is blocked). General responsiveness of the OS is pretty poor at this point, aside from having no internet connection.Īs a workaround, I found that going into the Firewall settings and disabling all options could prevent (or at least reduce) the likelihood of this issue happening. Similarly, any other application that requires the internet will fail to connect.Įarly on I realised the issue was related to Norton 360. When this is happening, if you look at the the macOS Activity Monitor it shows '' near (or at) the top of the CPU usage list, and the MacBook fans are usually making a lot of noise at that time (on full blast). However, no web browsers (Safari, Chrome, Edge) can load or refresh any webpage - they'll just report there is no internet connect. When this problem occurs, the macOS Network Settings panel will show both the WiFi and Ethernet/LAN connection as 'Connected' to the internet.

You might get half a day without problems, other days it goes wrong the first time you do anything at the start of the day. In that time, I've had a nearly daily issues with my MacBook randomly losing the internet connection once I open an Android Emulator then deploy my Flutter app. I've been developing with this particular environment since July 2021.

As a Flutter Developer, I use Android Studio with Android Emulators and iOS Simulators running on my work MacBook.

Mac os big sur android emulator