We don't have blacklist or whitelist on any of our computers.
S0   UHP.DNS Resolution failed with system:11004:The requested name is valid, but no data of the requested type was found!
G1   CLoginClient::NegotiateVersionClient()
G1   LoginOutgoing: starting authentication
G1   LoginOutgoing: authentication denied
G1   Login.AuthenticateClient: blacklisted
S0   Carrier[2]::CmdEndSession(): Received CMD_ENDSESSION with reason: LoginFailed
S0   SessionStatistics[2] Session to **Please do not post TeamViewer IDs** ended. Estimated capacity=192685kBit/s, Latency=0ms
S0   UDPv4: [2]: create udp connection was not successful: UdpHolePuncher shutting down: (*)
S0   UDPv6: [2]: create udp connection was not successful: UdpHolePuncher shutting down: (*)
S0!  RemoteSession[2]::AddRequestedCarrier(): request carrier UdpToPartner failed!
 I have found I can’t remote control computers if I don’t see all 4 options (remote control – prompt for psw, remote control using password, presentation, video call).  i.e. only Remote control using password shows when i click on their Computer under Computers and Contacts.