Here are a few things to try if client PCs can't access a CacheDrive over VPN by hostname:

  1. Some VPN setups do not allow NETBIOS broadcasting by default.  Check your VPN hardware or software for options related to NETBIOS handling.
  2. If you're using DNS for name resolution, make sure that your client PC is using the correct DNS server.
  3. Open the port for mDNS (UDP/5353).