Windows file name restrictions

Q. How do I enable long file name support in Windows 10?

A. In the past the maximum supported file length was 260 characters (256 usable after the drive characters and termination character). In Windows 10 long file name support can be enabled which allows file names up to 32,767 characters (although you lose a few characters for mandatory characters that are part of the name). To enable this perform the following:

1. Start the registry editor (regedit.exe)
2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem
3. Double click LongPathsEnabled
4. Set to 1 and click OK
5. Reboot

This can also be enabled via Group Policy via Computer Configuration > Administrative Templates > System > Filesystem > Enable NTFS long paths.