Not able to connect adb after upgrate Android Studio to 3.4

Question

unable to connect to adb.check the event log for a possible issue, verify that localhost entry is pointing to 127.0.0.1 or:: 1 for ipv4 or ipv6

Answer 1

I had this issue only after a Genymotion update, on Mac.

What worked for me: Open Genymotion preferences, Select ADB, choose "Use custom Android SDK tools" and points to your Android SDK folder.