eduardogarcia

Hi,

I'm using Remote Desktop Manager 2026.2.2.1 (64-bit) on macOS (Tahoe 26.5.1), and I'm having the same problem.

I've noticed that this happens when connecting via RDP to older versions of Windows, resulting in error 0x00020008.

I’ve already tried a few approaches, such as disabling NLA in the host’s RDP settings, disabling TLS, or disabling RDP security, but when I do that, I get the error “Security negotiation failed (0x0002000C)”.

I also tried downgrading RDM to versions 2025.3.9.2 and 2025.3.10.2, but there was no change in behavior.

Unfortunately, I’m having to use the “Windows App” on macOS to gain access to these servers running older operating systems.