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Error: Please prepare credentials before connecting

Why the RDS Proxy refuses clients that did not save their credentials, and how to show the login screen instead.

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Users get the message Please prepare credentials before connecting when their Remote Desktop client connects without a user name and password and the gateway login screen is disabled. This is a protection, not a failure: it prevents credentials from being typed on a screen that could be recorded.

Please prepare credentials before connecting

Option 1: prepare the credentials in the client

  1. In the Remote Desktop client, set the User name.
  2. Enable Allow me to save credentials.
  3. Windows asks for the password before connecting and sends it to the gateway.

Remote Desktop client: save the credentials

Option 2: display the gateway login screen

  1. Open RDS Proxy » Status.
  2. In RDP and session authentication settings, edit the session options.
  3. Turn on Display the login screen and apply.

Display the login screen

Display the login screen

Clients without prepared credentials then see the gateway login screen. The message itself can be reworded in Service settings » Error messages (error 6).