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# Known issues for RDP

This section describes troubleshooting information for RDP scripts using the Agent for Microsoft Terminal Server.

Tip: For general troubleshooting and limitations, see Known issues.

- Clipboard sharing supports only short simple textual content.

- When using certain IDEs that implement an internal clipboard mechanism, for example, IntelliJ, an rdp_send_clipboard_data step may be generated during recording. This is caused by the IDE's internal handling of clipboard operations. For replay purposes, you can comment out this step can be commented out to ensure a smooth replay.

- When recording with RDP Agent, applications which were developed using CBuilder may not record properly.

- RDP does not support 32-bit color depth. If recording uses this color depth, VuGen automatically switches to a lower color depth and a "[RDP Analyzer Warning (790: 418)] 32-bit color depth is not supported, switch to lower one". warning log item appears in the Recording Window.

- Remote Desktop Services redirection is not supported.

- Replay fails on rdp_sync_object_mouse_click/double_click steps:

  Workaround 1: Modify RDPAgentCodeGen.cfg file

  The RDPAgentCodeGen.cfg file can configure VuGen to automatically create an rdp_sync_on_image and rdp_mouse_click step the next time the script is generated for each rdp_sync_object_mouse_click/double_click steps which occur within a given window. To do this, you specify the name of the window, update a variable which counts the total number of windows for which this process occurs, and regenerate the script.

  1. Open the RDPAgentCodeGen.cfg file in the Script Directory > data folder.

  2. Open the Step Navigator and double-click the step that failed.

  3. Copy the name of the window.

  4. In the RDPAgentCodeGen.cfg file, increase the value of NumberOfTitles by 1.

  5. Add a line as follows:

         WindowTitleX=<name of window>

     where X is the new value of NumberOfTitles.

  6. Regenerate the script.

     Note: The RDPAgentCodeGen.cfg file can be used to automatically produce rdp_sync_on_image and rdp_mouse_click steps in a similar way for rdp_sync_object_mouse_click/double_click steps which are specified in different ways as well. Steps can be targeted based on the class attribute of the control. For more information, contact Software Support.

  Workaround 2: Manually insert a new step

  Manually insert an rdp_sync_on_image and rdp_mouse_click step for each step that fails. This method is less preferable, since steps added in this way are lost if the script is regenerated.

- When CredSSP authentication is enabled in the runtime settings, the connection to the server may fail.

  Resolution:

  1. Open the Group Policy settings on the server side.

  2. Select Computer Configuration > Administrative Templates > System > Credentials Delegation.

  3. Enable Encryption oracle remediation, and change Production Level setting to Vulnerable.

- Connecting to a Windows 10 or Windows Server 2016 server:

  When using the RDP protocol to record a connection to a Windows 10 or Windows Server 2016 server, the following error may appear on the RDP client: "An authentication error occurred."

  Resolution

  Perform the following procedure on the server:

  1. Open the Local Group Policy Editor by typing "gpedit.msc" into either a Run prompt or the Start menu.

  2. In the Local Group Policy Editor, select Local Computer Policy > Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Security.

  3. Enable "Require use of specific security layer for remote (RDP) connections" and set the security layer to RDP.

     Note: Alternatively, open HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp in the Registry Editor, and set the Value data for SecurityLayer to 1.

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