I have the exact same problem as here: [Network Response Time Out Error (create-react-native-app) (expo)](https://stackoverflow.com/questions/43593042/network-response-time-out-error-create-react-native-app-expo). Every time I try to scan the QR code from my phone on LAN, I get the network response timeout error. 

I've gone through every single response in both the linked stackoverflow post and the associated github thread: <https://github.com/react-community/create-react-native-app/issues/144#issuecomment-296631692> to no avail.

Everything I've tried

* set REACT\_NATIVE\_PACKAGER\_HOSTNAME='my-custom-ip-address-or-hostname' with my static ip
* disable all connections aside from my wifi (The only other connection I had to disable was "Local Area Connection 4", I didn't have virtualbox like others)
* set my wifi connection to private
* completely disable windows firewall
* make exceptions to 19000, 19001, 19002 (entirely redundant given I disabled firewall, but I was desperate)
* restart computer multiple times
* use same network on phone as on computer
* put the line, `"android": "set REACT_NATIVE_PACKAGER_HOSTNAME={your wifi ip address} && react-native-scripts android"` in my package.json

Note: A friend on the same network (also using a windows 10 laptop) got expo over LAN to work perfectly fine to his phone, so it's probably specific to my computer.

Note #2: Tunnel qr scanning works fine, but is painstakingly slow to reload so not realistic to use. Local brings me directly to "Something went wrong", no timeout error.