When connecting to Windows servers over Remote Desktop Protocol (RDP), a new warning is shown:
Caution: Unknown remote connection
- Okta Privileged Access (OPA)
- Advanced Server Access (ASA)
- Remote Desktop Protocol (RDP)
- Okta Classic Engine
- Okta Identity Engine (OIE)
This is a new warning that Microsoft has added through the April 2026 security patch.
A specific Remote Desktop Service registry value needs to be updated on the server to suppress the warning.
To resolve this, refer to the Microsoft article Understanding security warnings when opening Remote Desktop (RDP) files for steps and more information.
