Event ID 785 — Connection Request Management

Applies To: Windows Server 2008 R2

Connection requests in RD Connection Broker include user connection requests and redirection connection requests.

Event Details

Product: Windows Operating System
ID: 785
Source: Microsoft-Windows-TerminalServices-SessionBroker
Version: 6.1
Message: RD Connection Broker failed while changing session state for user %1 (on target %2). New State: %3
Farm Name = %4
Session ID = %5


Contact manufacturer of non-Microsoft plug-in

This issue can occur because of an issue with a non-Microsoft plug-in. You must contact the manufacturer of the non-Microsoft plug-in.


To verify that the RD Connection Broker server is managing connection requests successfully, examine Event Viewer logs and search for the following event message. This event message indicates that the RD Connection Broker server is managing connection requests successfully.

To perform this procedure, you do not need to have membership in the local Administrators group. Therefore, as a security best practice, consider performing this task as a user without administrative credentials.

To verify that the RD Connection Broker server is successfully managing connection requests:

  1. On the RD Connection Broker server, click Start, point to Administrative Tools, and then click Event Viewer.
  2. In the Event Viewer console tree, navigate to Application and Services Logs\Microsoft\Windows\TerminalServices-SessionBroker, and then search for the following events:
    • Event ID 801, Source TerminalServices-SessionBroker: This event indicates that the RD Connection Broker successfully managed a connection request.

Connection Request Management

Remote Desktop Services