PS C:\Users\Administrator\Desktop\platform-tools_r28.0.2-windows\platform-tools> .\adb devices
List of devices attached
adb server version (31) doesn't match this client (40); killing...
could not read ok from ADB Server
* failed to start daemon
error: cannot connect to daemon
PS C:\Users\Administrator\Desktop\platform-tools_r28.0.2-windows\platform-tools>