ipetkov

@Richard Markiewicz - thank you for your support - enabling/checking the box "Enable Network Level Authentication (NLA)" fixed my issue for the host in question.

Error message content improvement hopefully will shed some more light on the root cause and help users figure this out on their own in the future.

Thank you again!

@Richard Markiewicz I PM-ed you my session log with the issue reproduction

I have issues with direct RDP connection. I am not using any gateway. I will try to get some session logs

Hi, I am getting RDP Security Negotiation Failed on any windows Server RDP connection attempt.

This started happening after upgrading to latest RDM versions. I had upgraded to a recent version last week and even today on the latest still the same issue.

Currently on 2026.2.3.2 MacOS version

Before with older version of RDM - RDP connections were working to the same windows server hosts with same accounts/passwords.

I see in Application logs errors

Security negotiation failed ( 0x0002000C)