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Event ID 203 — RD Gateway Server Connections

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Applies To: Windows Server 2008 R2

For remote clients to successfully connect to internal network resources (computers) through a Remote Desktop Gateway (RD Gateway) server, clients must meet the conditions specified in at least one Remote Desktop connection authorization policy (RD CAP) and Remote Desktop resource authorization policy (RD RAP). RD CAPs specify who can connect to an RD Gateway server and the authentication method that must be used. RD RAPs specify the computers that clients can connect to through an RD Gateway server.

Note: A limit can be set on the RD Gateway server to restrict the maximum number of simultaneous client connections.

Event Details

Product: Windows Operating System
ID: 203
Source: Microsoft-Windows-TerminalServices-Gateway
Version: 6.1
Symbolic Name: AAG_EVENT_MAX_CONNECTIONS_REACHED
Message: The number of simultaneous connections to the RD Gateway server has reached the maximum number that was configured by the administrator. The server is therefore not accepting any new connections. The connection attempt by user "%1" on client computer "%2", using the authentication method "%3" has been denied. For information about how to modify the maximum connection limit, see the "Specify the Maximum Number of Allowable Connections for RD Gateway" topic in the RD Gateway Help.

Resolve

Increase the connection limit on the RD Gateway server

To resolve this issue, increase the connection limit on the RD Gateway server.

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

Note: For RD Gateway servers that are running Windows Server 2008 Standard Edition, a maximum of 250 simultaneous connections is supported.

To increase the connection limit on the RD Gateway server:

  1. On the Remote Desktop Gateway server, open Remote Desktop Gateway Manager. To open Remote Desktop Gateway Manager, click Start, point to Administrative Tools, point to Remote Desktop Services, and then click Remote Desktop Gateway Manager.
  2. In the console tree, click to select the node that represents your RD Gateway server, which is named for the computer on which the RD Gateway server is running.
  3. In the console tree, expand Monitoring.
  4. With the Monitoring folder selected, right-click the Monitoring folder, and then click Edit Connection Limit.
  5. On the General tab, under Maximum Connections, click Limit maximum allowed simultaneous connections to, and then specify a higher value for the number of allowable connections.
  6. Click OK.

Verify

To verify that RD Gateway server connectivity is working, examine Event Viewer logs and search for the following event messages.

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 RD Gateway server connectivity is working:

  1. On the RD Gateway 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-Gateway, and then search for the following events:
    • Event ID 101, Source TerminalServices-Gateway: This event indicates that the Remote Desktop Gateway service is running.
    • Event ID 200, Source TerminalServices-Gateway: This event indicates that the client is connected to the RD Gateway server.
    • Event ID 302, Source TerminalServices-Gateway: This event indicates that the client is connected to an internal network resource through the RD Gateway server.

 

RD Gateway Server Connections

Remote Desktop Services