[Q] Zune no longer recognizes my phone

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Hey there,

I'm having issues trying to sync my phone with my computer. When I connect my phone, nothing happens, Zune doesn't launch, and when I open it, it doesn't show my device as connected. I've tried everything I can think of, different USB ports, rebooting both the phone and my pc. I'm running windows 7 64 bit, and it was working before. Anyone know what's going on?


Thanks for the help!


p.s. I tried uninstalling the drivers for the device, and upon reinstall my computer said it was installing drivers for "Microsoft USB Sync" thought that was weird...

try making it forget your device (don't have your phone plugged in). to do this, click on the phone icon in the bottom left of zune, click view sync options, and then on that screen click forget device.

after this, try and connect it again.

Didn't work, i plug my phone in, and Zune still says I have no device connected

does your computer make it's sound when you connect the phone (device detected sound)? if not, you might need to reset your phone (settings > about > reset phone). if yes, does it show the eject icon in the notification area (system tray)?

yes, it makes the sound, and yes it shows the eject icon... this is very odd

I had this problem too. When i went to the Device Manager, it showed unknown device when i plugged my phone in using the USB cable.

Here is what I did (Windows 7). If you see an unknown device, right click it and select Update Driver Software. Click Browse my computer for driver software, then click Let me pick from a list of device drivers on my computer. Then click on the Have Disk button, then browse to C:\Program Files\Zune\Drivers\Zune and select WMZuneSerUSB.inf. Then select Windows Phone 7. Hit Next and you should now see your Unknown Device show up as either Windows Phone or the name of your phone under Portable Devices in the Device Manager.

Actually, I forget if it is WMZuneSerUSB.inf or Zune.inf, so you'll need to try both.

Hope this helps.

Originally Posted by superscientifical

I had this problem too. When i went to the Device Manager, it showed unknown device when i plugged my phone in using the USB cable.

Here is what I did (Windows 7). If you see an unknown device, right click it and select Update Driver Software. Click Browse my computer for driver software, then click Let me pick from a list of device drivers on my computer. Then click on the Have Disk button, then browse to C:\Program Files\Zune\Drivers\Zune and select WMZuneSerUSB.inf. Then select Windows Phone 7. Hit Next and you should now see your Unknown Device show up as either Windows Phone or the name of your phone under Portable Devices in the Device Manager.

Actually, I forget if it is WMZuneSerUSB.inf or Zune.inf, so you'll need to try both.

Hope this helps.

I can't seem to be able to get past selecting the .inf file, every time i try, it says the folder does not contain a compatible software driver. Doesn't work with either .inf file....

Originally Posted by A Dustman

Hey there,

I'm having issues trying to sync my phone with my computer. When I connect my phone, nothing happens, Zune doesn't launch, and when I open it, it doesn't show my device as connected. I've tried everything I can think of, different USB ports, rebooting both the phone and my pc. I'm running windows 7 64 bit, and it was working before. Anyone know what's going on?


Thanks for the help!


p.s. I tried uninstalling the drivers for the device, and upon reinstall my computer said it was installing drivers for "Microsoft USB Sync" thought that was weird...

I had this problem with my Samsung Focus.

Try using the cable that came with the phone, not another one...

That is what worked for me..

Nothing seems to be working, I may have to reset my phone, which i was hoping to avoid...

Did you perhaps use the hidden Tethering feature? If so, then change that option back to "Zune sync" and you're done. It is not possible to use your phone for Zune sync and tethering at the same time, for now.