C:\Users\Administrator>adb devices
* daemon not running; starting now at tcp:5037
adb: CreateFileW 'nul' failed: 系统找不到指定的文件。 (2)
* failed to start daemon
adb.exe: failed to check server version: cannot connect to daemon

守护进程未启动，电脑端adb.exe连接守护进程失败

楼主问题解决了么？今天自己Window10 电脑也出现了这个问题。