I had the same error ERROR: _factory_client_recvand solved it by killing the server on the command line with adb kill-server, then opening Android AVD Manager android avdand removing ALL of my Android virtual devices , etc. AVD Name: Nexus 4, Device: Android 4.4.2, Target: Intel Atom x86, Skin: No Skin, Front Camera: Webcam0, Internal storage: 100 MB, SD card size: 50 MB, Emulator parameters: use Host GPU)
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