Nick is correct, you will need to disable NLA on Windows server 2022,
also if youa re not logging in as Administrator you will need to add the
user account to the Remote desktop group permissions.
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On 2/3/2026 7:52 AM, Nick Couchman wrote:
On Tue, Feb 3, 2026 at 10:32 AM Devine, Harry (FAA) via user
<[email protected]> wrote:
We have some users that are using a Windows 2022 server in their
environment, and with version 1.5.5, they always get the following
error message:
RDP Server closed/refused connection: Server refused connection
(wrong security type?)
In looking their connections, it looks like they are using RDP on
port 3389 and the security mode is “RDP encryption”. One server
is Windows 2016 and they can get in, and the other is Windows 2022
and they get the error noted above.
I'm shocked RDP Encryption works for 2016, and certainly would not
expect it to work for 2022. I'd suggest trying NLA.
-Nick
