We have recently moved our DHCP and DNS services from Server 2008 R2 to Server 2019 (DHCP and DNS subsequently turned off , on the old server)
Whilst this appears to work okay (clients are connecting to the correct DHCP, and using correct DNS), it also worth noting that pinging hosts by name does return the correct IP#
Whenever I attempt to RDP via name ...(note: RDP via IP# continues to work), I get an "invalid credentials" message.....even though the credentials are correct. If I subsequently attempt to rpd via IP#....no issues are encountered.
So far the only solution is to remove / add the host in question to the domain....which appears to resolve the issue.