An error was encountered while attempting to communicate with this device

问题

I get this error while "Connect via network" option in new version of XCode9 and iOS11.

I checked the "Connect via network" box. After few seconds XCode gives me this error:

"An error was encountered while attempting to communicate with this device"

Anyone facing the same issue?

current configuration

• XCode Version 9.0 beta 5 (9M202q)
• iOS Beta 5
• iPad Air

回答1:

I found that error causes when device lost connection for a moment. it's happen when you have damaged (or very old) cable. How ironic... trying to connect a device for ones for been wireless anymore, but cable...

回答2:

I got same error in my case Quit Xcode after that restart clean and build its working fine .

回答3:

I tried rebooting laptop, xcode but, it worked by cleaning and building the app multiple times(in my case- 4 times).

回答4:

There might be more than one reason for this error:

"An error was encountered while attempting to communicate with this device. (The service is invalid.)"

I hit this problem today after I transferred my iPad XCode project from one Mac to another. I was pretty sure there was nothing wrong with my USB cable, it was working just fine on the other Mac with the same iPad.

So I did the old XCode standby voodoo solution:

1. in XCode, do a Product->Clean Build Folder;
2. quit XCode;
3. from the macOS Finder, delete the DerivedData folder for the project;
4. launch XCode, rebuild and run.

It works just fine now.

回答5:

All I did was unplug the charger from the phone and replugged it back in. This solved it for me.

来源：https://stackoverflow.com/questions/45587463/an-error-was-encountered-while-attempting-to-communicate-with-this-device