# Troubleshoot the Connector

This section describes how to troubleshoot problems that might occur when you set up the Salesforce Connector.

The error "invalid query locator" appears in the logs

This can occur when the connector, or multiple connectors using the same account, send too many concurrent requests to SalesForce. SalesForce limits the number of concurrent queries when there are many results that must be paged. You can limit the number of requests by editing the configuration file `SalesforceConnector.exe.config` in the connector installation directory. If the file does not exist you can create it from the example below.

TIP: The file name might be different if you chose a different name for the connector service when installing the connector, but the extension is always `.exe.config`.

The following example limits the connector to two concurrent connections.

    <?xml version="1.0" encoding="utf-8" ?>
    <configuration>
        <system.net>
            <connectionManagement>
                <add address = "*" maxconnection = "2" />
            </connectionManagement>
        </system.net>
    </configuration>

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