Read our step-by-step tutorial: http://winaero.com/blog/how-to-enable...
In Windows 10 Anniversary Update, Microsoft finally addressed a long-standing issue that users faced many times - the 260 character limitation for path length. In case you don't know, in all currently released Windows versions, the maximal length of the file path is 260 chars. Starting with build 14352 of Windows 10, which is part of the Anniversary Update (version 1607), this limitation can be bypassed.