You need to have the device connected to change the name but it will not change until you turn off the connected blue tooth device. Once it is changed it will stay until you change it again.
fsutil behavior set disable8dot3 1
fsutil behavior set disablelastaccess 1
Open a cmd.exe as Administrator and issue the following command:
powercfg -h off
Simply add a “^” in front for special characters like “>”, “<“, “|”…, e.g.
<info> on the screen.