windows desktop access : RDP client exited with an error: [decode SERVER_PLATFORM_CHALLENGE] PDU error

[gilbert0571]

Expected behavior: I have serveral windows servers in AD managed by teleport which is installed on debian 10 and it works well with the version 14.3.3. However the connections to these windows servers failed after updating to teleport 15.2.2.

ps: I have enabled remotefx following this guide: https://github.com/gravitational/teleport/blob/v15.0.0/docs/pages/desktop-access/active-directory-manual.mdx#enable-remotefx

bug screenshot：

Bug details:

• Teleport version: 15.2.2
• Debug logs: [2024-04-17T06:13:38Z INFO ironrdp_connector::license_exchange] Send message=ClientNewLicenseRequest { license_header: LicenseHeader { security_header: BasicSecurityHeader { flags: BasicSecurityHeaderFlags(LICENSE_PKT) }, preamble_message_type: NewLicenseRequest, preamble_flags: PreambleFlags(0x0), preamble_version: V3, preamble_message_size: 322 }, client_random: [53, 255, ..., 0, 0, 0, 0, 0, 0, 0, 0], client_username: "", client_machine_name: "" } [2024-04-17T06:13:38Z ERROR rdp_client] client_run failed: ConnectorError(Error { context: "decode SERVER_PLATFORM_CHALLENGE", kind: Pdu(Error { context: "::decode::{{closure}}", kind: InvalidMessage { field: "blobType", reason: "invalid blob type" }, source: None }), source: None }) 2024-04-17T14:13:38+08:00 INFO [WINDOWS_D] Rust RDP loop finished client-ip:192.168.51.100 desktop-addr:192.168.51.109:3389 desktop-name:WIN-5335-dev-ph-eac3cc20 pid:415.1 rdp-addr:192.168.51.109:3389 rdpclient/client.go:339 2024-04-17T14:13:38+08:00 INFO [AUDIT] windows.desktop.session.end

[zmb3]

This was fixed in #40590