How to remove write protect on USB On The Go?

How to format USB On The Go (OTG), The disk is write protected?
plz help me... many of my document and data in this USB.

I ALREADY USE THIS METHOD (thanks and credit to Romz - Nov 26, 2013), but it still not working. The USB still write protected.

Click start
then run regedit
go to this directory HKEY_LOCAL_MACHINE\SYSTEM\Currentcontrolset\control\ if you can't find StorageDevicePolicies under control folder then make some new one. Follow this steps:

step 1: go to this directory HKEY_LOCAL_MACHINE\SYSTEM\Currentcontrolset\control\ again and right click control folder

step 2: select new, then click key and rename the new key #1 folder into StorageDevicePolicies

step 3: right click StorageDevicePolicies folder and select new DWORD(32-bit) Value for 32-bit Operating System and select new DWORD(64-bit) Value for 64-bit Operating System

step 4: rename dword newer folder into WriteProtect, then double click WriteProtect and change the value data into 0 with hexadecimal base, Then close regedit

step 5: open my computer and refresh it 5 times without do anything to your usb, and properly eject your flash drive

step 6: plug in your usb again into your computer and format it using exfat instead of fat32