Thank you for reaching out to the Samsung community! We would like to inform you that My knox has been discontinued from the Samsung end and alternative application for the device J7 2015 will be available on galaxy store.
Be sure to hit ♡ when you find an answer that works for you. For Further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
