Client computer connects to remote computer by using alias

When a client computer connects to a remote computer by using their alias name, the client may receive the error:

System error 52 has occurred.
A duplicate name exists on the network.

This problem occur when you try to connect to the server by using a CNAME alias that is created in the DNS zone, and the server is not listening on the alias, and therefore is not accepting connections to that name.

To solve this problem, add a registry key to disable the name checking
1. Create the CNAME record for the server on the DNS server (if CNAME record is not exist)
2. Add the registry key on that server.
HKLM\System\CurrentControlSet\Services\LammanServer\Parameters
Value name: DisableStrictNameChecking
Data type: REG_DWORD
Value: 1
3. Restatr you computer.