21:20 Unable to run 'adb': null
21:20 'E:\AndroidSDK\platform-tools\adb.exe start-server' failed -- run manually if necessary
21:20 error: cannot open transport registration socketpair: Invalid argument
21:20 This application has requested the Runtime to terminate it in an unusual way.
21:20 Please contact the application's support team for more information.
21:20 could not read ok from ADB Server
21:20 * failed to start daemon *
21:20 error: cannot connect to daemon
2017/11/14
21:20 Unable to run 'adb': null
21:20 'E:\AndroidSDK\platform-tools\adb.exe start-server' failed -- run manually if necessary
21:20 error: cannot open transport registration socketpair: Invalid argument
21:20 This application has requested the Runtime to terminate it in an unusual way.
21:20 Please contact the application's support team for more information.
21:20 could not read ok from ADB Server
21:20 * failed to start daemon *
21:20 error: cannot connect to daemon
adb无法连接，出现如上日志文件
解决方法：
windows 10环境下关闭防火墙即可