ADB server didn't ACK

C:\Users\deaokylin>adb start-server
* daemon not running. starting it now on port 5037 *
ADB server didn't ACK
* failed to start daemon *


C:\Users\deaokylin>netstat -ano | findstr "5037"
TCP 127.0.0.1:5037 0.0.0.0:0 LISTENING 8596
TCP 127.0.0.1:5037 127.0.0.1:21256 ESTABLISHED 8596
TCP 127.0.0.1:21256 127.0.0.1:5037 ESTABLISHED 10204


任务管理器杀死pid对应程序

C:\Users\deaokylin>adb start-server
* daemon not running. starting it now on port 5037 *
* daemon started successfully *