It contains the list of all RDP connections that have ever been established by this user. Now expand the key HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Servers.To clear the history of the most recent RDP connections, select all parameters with the names of MRU0-MRU9, right-click and select Delete The name (or the IP address) of the remote desktop server is stored in the value of the MRU*.
You will have to manually clear some registry keys.
It’s impossible to remove a computer (or computers) from the list of RDP connection history using built-in Windows tools.
Information about all RDP connections is stored in the registry of each user. How to Remove RDP Connection Cache from the Registry?