Good to hear that you were able to resolve your problem and thanks for posting back and updating your thread.
Sounds like it may have been a problem with the NetBIOS cache on one of or both machine(s). The NetBIOS mechanism attempts to resolve friendly names (computer host names) to IP Adresses and can often take some time to refresh itself with up to date accurate information. Sometimes you can use the ping command to force an update by pinging the ip address (using the -a switch to determine the host name) and then the host name. You can then view the local machines NetBIOS name cache content by typing
nbtstat -c
at the command prompt
Usually using IP addresses instead of host names when connecting through RDP is more reliable and using static IP address assignments is even more reliable yet.
Thanks for joining our community and we hope to continue to see you around.
Regards
Randy