解决“adb server is out of date. killing... ”的办法_adb server is out of date. killing... * daemon sta

有时候ADB不能用，并且会报以下的错误：
C:\Users\gaojs>adb devices
adb server is out of date.  killing...
ADB server didn't ACK
* failed to start daemon *
error: unknown host service

用如下的命令，发现5037的端口被占用：
C:\Users\gaojs>adb nodaemon server
cannot bind 'tcp:5037'

用如下的命令，能查到什么进程占用了这个端口：
C:\Users\gaojs>netstat -ano | findstr "5037"
  TCP    127.0.0.1:5037         0.0.0.0:0              LISTENING       21152
  TCP    127.0.0.1:5037         127.0.0.1:62629        ESTABLISHED     21152
  TCP    127.0.0.1:5037         127.0.0.1:63942        TIME_WAIT       0
  TCP    127.0.0.1:5037         127.0.0.1:63943        TIME_WAIT       0
  TCP    127.0.0.1:5037         127.0.0.1:63944        TIME_WAIT       0
  TCP    127.0.0.1:62629        127.0.0.1:5037         ESTABLISHED     2980

用如下命令，可以看到上述PID的进程，到底是什么了：
C:\Users\gaojs>tasklist | findstr "2980"
QQ.exe                        2980 Console                    4     60,712 K
C:\Users\gaojs>tasklist | findstr "21152"
tadb.exe                     21152 Console                    4      2,136 K
原来是腾讯这个无耻的家伙（tadb就是Tencent Adb）！

用如下的命令，将tadb.exe（PID:21152）杀掉：
C:\Users\gaojs>taskkill /f /pid 21152

然后，再试，就可以了：
C:\Users\gaojs>adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
4dfadcb86b00cf05        device

参考：http://blog.csdn.net/id19870510/article/details/8489486