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My Nexus 4 is recognised as a Nexus 4 in Device Manager with a yellow exclamation mark on its icon.

When I installed the USB drivers for it, the yellow mark went away, and Device Manager said that the device is working properly. However, it is not appearing as a portable device or removable drive, and I cannot access the files on the device.

What am I missing? I'm running 32-bit Windows XP SP3 .

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Did you switch the USB mode from charging to mass storage? – Journeyman Geek Aug 4 '13 at 14:37

As wrong as this sounds, you need to update your version of Windows Media Player in order to install the MTP drivers that are now needed for modern Android devices.

You can also download and install the MTP kit from Microsoft.

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After you install the USB driers go to "developer" section on your device and uncheck "USB debugging ! After that you will see the phones internal storage on your PC named, maybe "Nexus4" under "My Computer. Thats how i got to my files....

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