Nexus 7 not visible over USB via “adb devices” from Windows 7 x64

Question

I have done the obvious -- the USB driver was installed from the latest Android SDK, and USB debugging was turned on in the tablet.

When the Nexus 7 is connecte

Answer 1

In addition to setting USB connection/storage mode to "Camera (PTP)", I also had to enable developer mode, which has been hidden since 4.2.

1. Go to the Settings menu, and scroll down to 'About phone/tablet'. Tap it.
2. Scroll down to the bottom again, where you see 'Build number'.
3. Tap it seven (7) times. After the third tap, you'll see a playful dialog that says you're four taps away from being a developer. Keep on tapping and you've got the developer settings.
4. Now under Settings there's 'Developer options'. Tap it.
5. Tap 'USB debugging' to enable it.

Source: How to enable developer settings on Android 4.2

Answer 2

Check out blog post Nexus 7 Android development which has the steps in detail.

Answer 3

I also have a Nexus 7 and Windows 7 64-bit and got ADB working by stumbling around in this thread and others about a month ago. Then it stopped working. The only thing odd I remember happening before was Windows installing some Bluetooth drivers as I started up (I do not have Bluetooth devices).

I floundered for a day this time. Now it is working again! The last thing I did was to use Device Manager to "disable" the device and reboot.

Answer 4

I'm using Nexus 7 (4.2) on Windows 7 x64. None of the other methods described here worked for me. The tab was already in PTP mode. Finally, I could get it working when I added the below line to 'android_winusb.inf' under <android-sdk>\extras\google\usb_driver and did an 'update driver':

%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E44&REV_9999&MI_01

To get the exact hardware ID (USB\VID_18D1&PID_4E44&REV_9999&MI_01 in my case), you can go to Computer Management -> Device Manager -> Details tab -> select Hardware Id from the drop-down.

Answer 5

I'm on Win 7 64-bit and I see that most people with the same problem here also on 64-bit. To rule out the hardware and the OS, I used VMware to run Win 7 32-bit on the same PC. Except for having to edit the .inf file with the correct VID/PID everything else went perfectly on Win 7 32-bit so that tells me the PC is fine and Win 7 32-bit is fine also.

Going back to my Win 7 64-bit none of the suggestions above worked for me. However I noticed one thing though, ADB is installed under Program Files (x86) but the driver installer is installing the 64-bit. Win 7 64-bit is recognizing the Nexus 7 as Android Composite ADB Interface but ADB does not detect it.

So is there an ADB 64-bit version somewhere? if my installation is under (x86) on Win 7 64-bit, does it mean I messed up with the installation somewhere.

Would my problem be related to USB drivers 64-bit installed but ADB is 32-bit?

Another issue I noticed when the Nexus 7 USB driver gets installed in the Properties I only see Android Composite ADB Interface for device functions. Under Win 7 32-bit Properties is showing 3 device functions.

it looks like the issue is the USB driver still.

Answer 6

The solution that seemed to fix this for me, on top of PTP, is not selecting Always allow from this computer when allowing USB debugging. Revoking the authorisations and manually accepting each time the device is connected fixed this for me. (Settings -> Developer options -> Revoke USB debugging authorisations)