Event ID 20 — Remote Desktop Services Availability

Applies To: Windows Server 2008 R2

The Remote Desktop Session Host role service relies on the Remote Desktop Services service to be running in order to accept remote connections. Remote Desktop also relies on the Remote Desktop Services service in order to support remote connections for administrative purposes.

Event Details

Product: Windows Operating System
ID: 20
Source: Microsoft-Windows-TerminalServices-LocalSessionManager
Version: 6.1
Message: Attempt to send %1 message to Windows video subsystem failed. The relevant status code was %2.


Use error code to determine error

When there is a failed attempt to send messages to the Windows video subsystem, the error code can help determine the cause of this error.


To verify that Remote Desktop Services is available, ensure that the Remote Desktop Services service is started.

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

To verify that the Remote Desktop Services service is started:

  1. On the computer, 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 Remote Desktop Services.
  4. Confirm that the Status column for the Remote Desktop Services service displays Started.

Remote Desktop Services Availability

Remote Desktop Services