Android adb wireless/WIFI debug Operation timed out

I think this might help...

for windows run cmd from "As Administrator" then

netsh int ip reset

For Mac users

1. Click the Apple icon in the top left-hand corner and then select System Preferences from the drop-down menu.

2. Select Network.

3. Select your Connected internet connection (Ethernet or Wi-Fi) and then click Advanced.

4. Select the TCP/IP tab and then click Renew DHCP Lease. And press Ok

So after a huge number of trials, I think the problem is somehow wifi related, I think this feature does not work well with WPA2 (or any kind of?) Enterprise encryption, because I was using my school Wifi, and it turned out to be okay, up and running, for the hotspot I set up with another laptop.

What solved this for me:

• disconnect the phone from USB cable
• restart the phone
• reconnect the phone by USB cable

(meanwhile):

• adb kill-server
• adb start-server

Then follow the "standard" procedure.

Make sure your computer and the android device are using the same wifi network. I had the same issue and fixed it after changing to the same wifi.