How to Fix iTunes Sync Error -54 ?

To Fix iTunes Sync Error -54 which is a permission error either on your computer or device? The error usually occurs when you try to sync your iPhone, iPad or iPod using iTunes to backup or restore. When syncing songs, images or something on iPhone, iPad or iPod touch with iTunes you may encounter   the iTunes sync Error -54:”The iPhone 7 cannot be synced. An unknown error occurred (--54)” problem that stop you from transferring the items. It seems when you haven’t authorized your computer or do...
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