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You can enable the Remote Desktop Connection either from System Properties or from the registry. Read this 4sysops article to learn how to add users remotely to a user group. By default, no members are in this group, and only members of the Administrators group can connect via RDP.
A quick reset of saved credentials can resolve this error. However, corrupt or changed credentials can often result in the Remote Desktop can’t connect to the remote computer error. On a Public network, Windows disables the network discovery feature to hide your computer from other computers.
If your user account has no administrator privileges, you should be a member of the local Remote Desktop Users group to access the remote machine via RDP. Keep in mind ping won’t work if ICMP is blocked on your network. You can use ping, a Telnet client, and PsPing from your local machine to check the connectivity to the remote computer. There are many reasons why an RDP connection to a remote machine might fail. This post aims to discuss all the common reasons why a Remote Desktop Protocol (RDP) connection can’t connect to a remote computer. Another workaround to fix Remote Desktop connection-related issues is to tweak the Registry Editor to add the RDGClientTransport key.
When you save credentials for a specific remote computer and then try to connect to a different one, an error can occur because the saved credentials don’t match. Make sure to allow traffic on this port or list Remote Desktop as an allowed app to prevent the firewall from blocking access. Other factors, like network misconfigurations, DNS problems, or insufficient permissions, can also lead to this error.