As per Samuria, you're only able to transfer files to/from an FTP server. I believe what you're wanting to do you'd need a Network Drive like a file...
I'm betting that this issue is up to BattlEye to fix. If that's the case, I'll probably not be able to use any insider builds between now and 19H1's...
250GB Samsung 960 EVO M.2,
256GB OCZ Vector,
6TB WD Black WD6001FZWX
8TB WD MyCloudEX2Ultra NAS
PSU:
Seasonic Prime Titanium 850W
Case:
Thermaltake Core P3 wall mounted
Cooling:
Corsair Hydro H115i
Keyboard:
Logitech wireless K800
Mouse:
Logitech MX Master
Internet Speed:
1 Gbps Download and 35 Mbps Upload
Browser:
Google Chrome
Antivirus:
Windows Defender and Malwarebytes Premium
Other Info:
Logitech Z625 speaker system,
Logitech BRIO 4K Pro webcam,
HP Color LaserJet Pro MFP M477fdn,
Linksys EA9500 router,
Arris SB8200 cable modem,
APC SMART-UPS RT 1000 XL - SURT1000XLI,
Galaxy S9 phone
Show your PC:
227
Second PCComputer Type Laptop System Manufacturer/Model Number HP Envy Y0F94AV OS 64-bit Windows 10 Pro build 18334 CPU i7-7500U 2.70 GHz Memory 16 GB DDR4-2133 Graphics Card NVIDIA GeForce 940MX Sound Card Conexant ISST Audio Monitor(s) Displays 17.3" UHD IPS touch Screen Resolution 3480 x 2160 Hard Drives 512 GB M.2 SSD Browser Google Chrome Antivirus Windows Defender and Malwarebytes Premium