I did yesterday, trying to get to the bottom of the MTP driver failure problem. I decided to install the Anni update only to be faced with yet another issue! Not only did it still not recognise any USB mass storage devices (Android, iOS or WM10) my D: drive had completely vanished too! So I've reverted back to the 1511 build and I'll wait for M$ to fix it.
I've tried everything to get this fixed, from Media Feature pack updates (all three versions), uninstalling USB drivers and rebooting, Trying new cables on every USB port I have, editing the registry, changing the USB power states and I've even gone as far as enabling legacy support and installing chipset drivers for the phones and still nothing! I give up!