@ALL
Thanks for your feedback and really sorry for the inconvenience this have caused and the late reply.
Usually this issue is related to the network environment, and power saving mode on device may cause this, too. Please check if you have set any power saving mode on your device. You may keep screen awake to avoid network being cut off.
Because we cannot reproduce your issue. So if you guys could offer us more details, such as what operation and factors will lead to this, we can figure out the cause and fix it more efficiently.
And we've fixed some bugs and some improvements are made since V2 was released. The latest version of AirDroid is 2.0.6. Would you please update AirDroid to the latest version and try if the issue still remains?
If yes, how long will this error message appear and more details?