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Davyd NRB
Davyd NRB

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How to fix "ADB server didn't ACK" error on MacOS Sequoia

If you see the next error in you stdout when you run adb commands, I have a simple solution for you: temporarily disable unused interfaces, such as awdl0 (used for AirDrop) or other virtual interfaces: sudo ifconfig awdl0 down

* daemon not running; starting now at tcp:localhost:5037
ADB server didn't ACK
Full server startup log: /var/folders/f5/3pmcz80n74n56ymms26g_4h00000gn/T//adb.501.log
Server had pid: 73568
--- adb starting (pid 73568) ---
11-27 15:26:43.561 73568 622665 I adb     : main.cpp:63 Android Debug Bridge version 1.0.41
11-27 15:26:43.561 73568 622665 I adb     : main.cpp:63 Version 35.0.2-12147458
11-27 15:26:43.561 73568 622665 I adb     : main.cpp:63 Installed as /Users/hi/Library/Android/sdk/platform-tools/adb
11-27 15:26:43.561 73568 622665 I adb     : main.cpp:63 Running on Darwin 24.1.0 (arm64)
11-27 15:26:43.561 73568 622665 I adb     : main.cpp:63 
11-27 15:26:43.564 73568 622665 I adb     : auth.cpp:416 adb_auth_init...
11-27 15:26:43.566 73568 622665 I adb     : auth.cpp:152 loaded new key from '/Users/hi/.android/adbkey' with fingerprint 0CBF619FA32DB4D1DE6D7228BFE4C2205D41C69DD69C2EB6F0EC7E9A1D43D678
11-27 15:26:43.567 73568 622665 I adb     : udp_socket.cpp:170 AdbUdpSocket fd=9
11-27 15:26:43.567 73568 622665 I adb     : udp_socket.cpp:170 AdbUdpSocket fd=10
11-27 15:26:43.567 73568 622665 I adb     : udp_socket.cpp:274 SetMulticastOutboundInterface for index=14
11-27 15:26:43.567 73568 622665 I adb     : udp_socket.cpp:533 bind endpoint=0.0.0.0:5353
11-27 15:26:43.567 73568 622665 I adb     : udp_socket.cpp:274 SetMulticastOutboundInterface for index=14
11-27 15:26:43.567 73568 622665 I adb     : udp_socket.cpp:558 bind endpoint=[0000:0000:0000:0000:0000:0000:0000:0000]:5353 scope_id=0
11-27 15:26:43.567 73568 622665 I adb     : udp_socket.cpp:170 AdbUdpSocket fd=11
11-27 15:26:43.567 73568 622665 I adb     : udp_socket.cpp:274 SetMulticastOutboundInterface for index=17
11-27 15:26:43.567 73568 622665 I adb     : udp_socket.cpp:558 bind endpoint=[0000:0000:0000:0000:0000:0000:0000:0000]:5353 scope_id=0
11-27 15:26:43.634 73568 622665 F adb     : udp_socket.cpp:447 Check failed: static_cast<size_t>(num_bytes_sent) == length (static_cast<size_t>(num_bytes_sent)=11, length=45) 
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