Event ID 834 — RD Connection Broker Availability

Applies To: Windows Server 2008 R2

The RD Connection Broker must be available to accept connection requests from user sessions, RD Session Host servers in a farm, and RD Session Host servers running in redirection mode.

Event Details

Product: Windows Operating System
ID: 834
Source: Microsoft-Windows-TerminalServices-SessionBroker
Version: 6.1
Message: The %1 plugin has an invalid sub key in the registry. Sub key for this plugin should be a positive integer that determines priority for that plugin (order in which plugins are called by the RD Connection broker). Please check the registry value for this plugin.


Change filter plug-in priority to a positive number

The filter plug-in priority must be a positive integer and is set by using Registry Editor. The registry path is as follows: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tssdis\Parameters\Filter\<priority>, where <priority> is replaced with a positive integer.


To verify that the RD Connection Broker server is available, ensure that the Remote Desktop Connection Broker service is running.

To perform this procedure, you must have membership in the local Administrators group, or you must have been delegated the appropriate authority.

To check that the Remote Desktop Connection Broker service is running:

  1. On the RD Connection Broker server, open the Services snap-in. To open the Services snap-in, click Start, point to Administrative Tools, and then click Services.
  2. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Yes.
  3. In the Services pane, locate the service named Remote Desktop Connection Broker.
  4. Confirm that the Status column for the Remote Destktop Connection Broker service displays Started.

RD Connection Broker Availability

Remote Desktop Services