Android Studio doesn't recognize my device

Question

Here is the problem. I want to run my Android Studio apps on my device (Samsung Galaxy Ace 2). But nothing works for me. Tell me what I've missed:

1) USB debugging is on

2) ADB driver is installed (in device manager i can see Android Composite ADB Interface)

3) ADB device list is still clear, even if i reset server(adb kill-server, adb start-server, adb devices - list of devices is clear)

4) in google usb driver directory, in android_winusb.inf file I added my device identificators

5) Android device manager still cannot connect to my device, showing this error when I reset it: "adb connection error an existing connection was forcibly closed by the remote host"

So I will be glad to hear any advices. Hope you'll help me

Answer 1

I had the same problem. So here is what i did

1. reinstalled the device driver
2. changed the USB computer connection from MTP to Mass storage(UMS)

And it worked.

Answer 2

Click Revoke USB debugging authorization in Developer option and try it again.

Answer 3

Solution for those working with Huawei phones - You will get this error when ADB interface is not installed. Check if you have installed Huawei HiSuite. USB driver gets installed when you install HiSuite (I suppose this is true for most of the new phones that come with a Sync Software). If the ADB interface is installed on your computer you should see 'Android Composite ADB Interface' under Android Phone in your Device Manager as shown in this picture.

Answer 4

I was on Samsung S8 and had same problem too. After I installed Samsung Kies, issues was resolved for me, as I believe it had updated the correct driver required for my Samsung S8.