Sandisk Ultra 64gb MicroSD Wont format.

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I have a SanDisk Ultra 64GB In My mobile device type Galaxy S5 I want to do formate and When you attempt to de formate SanDisk Ultra by windows show:- ( window was unable to complete the format), and when attempt format by Sd formataatar:- ( the Memory Card is write-Protected Please relase The Write Protect switch ) Please help me to do format The Memory Thank you very much