Update troubleshoot-errors-running-attended-or-unattended-desktop-flows.md

Author: johndund

support/power-platform/power-automate/troubleshoot-errors-running-attended-or-unattended-desktop-flows.md

@@ -51,3 +51,4 @@ _Original KB number:_   4555406
 |WcfServerCrash|500|Attended</br>Unattended|This error code occurs when the machine encounters an unexpected error while answering the cloud orchestrator. </br>- Verify that the machine has sufficient compute and memory resources while running the automation.</br>- Ensure that the network connection is stable during the automation. </br>- Ensure that you have the latest version of Power Automate for desktop installed.|
 |RdpPermissionNotGranted|400|Unattended|This error occurs when the user specified in the connection doesn't have permissions to create remote desktop sessions on the machine. </br>- Verify that the user in question is included in either the Administrators or Remote Desktop Users group on the machine.|
 |XrmMachineGroupNotFound|404|Attended</br>Unattended|This error occurs when the machine group has been deleted. Please re-create the group and update the connection.|
+|SessionCreationInvalidCredentials|400|Unattended|This error occurs when the unattended session could not be created with the credentials provided. This may occur if you are not using the username in the right format. For AAD-joined machines ensure you are using [email protected] and for domain-joined machines ensure you are using domain\user.|