In Windows Server 2012 and before the maximum length for a path (file name and its directory route) - has been 260 characters. In Windows Server 2016 you can enable longer paths.

Open Group Policy Editor (open shell window and type gpedit.msc and hit <Enter> key).

Navigate to the following directory: Local Computer Policy > Computer Configuration > Administrative Templates > System > Filesystem

Double-click Enable NTFS long paths option

Choose <Enabled>

Click <Apply> and <OK>

More manuals for Windows you can find here