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Troubleshooting Web Probe URLs

  • Article

 

Applies To: Windows Server 2012 R2, Windows Server 2012

When remote client computers connect to the corporate network over DirectAccess, a web probe URL is used to validate that the connection was successful and that the remote client is able to access corporate network resources. To load balance web probe requests in a multisite deployment, a web probe URL is added for each entry point.

This topic contains troubleshooting information for issues related to web probe URL.

Adding and removing web probe URLs

  • Issue 1

    Warning received—A DNS entry for web probe <web_probe_hostname> and IP address <IP_address> cannot be added. Add the entry manually.

    Cause

    Adding a DNS entry for the web probe URL for the new entry point failed.

    Solution

    Manually add a DNS record with the name and IP addresses specified in the warning message.

  • Issue 2

    Warning received—A DNS entry for web probe <web_probe_hostname> and IP address <IP_address> cannot be removed. Remove the entry manually.

    Cause

    Removing the DNS entry for the web probe URL for the entry point you are removing failed.

    Solution

    Manually remove the DNS record with the name and IP addresses specified in the warning message.

IP address of management server associated with web probe URL

Warning received—One or more IP addresses of management server <management_server> cannot be added because they are associated with the web probe URL used to verify DirectAccess client connectivity. The server will be added without the conflicting IP addresses. Ensure that IP addresses associated with the probe URL are not configured on any management servers.

Cause

The IP address of the management server you are trying to add conflicts with one of the web probe URLs. Accessing the web probe server should not be available on the infrastructure tunnel.

Solution

Make sure that any IP addresses associated with the web probe URL are not configured on any management server.

Cannot verify IP addresses

Warning received—The check to verify that management server IP addresses do not conflict with the IP addresses associated with the web probe URL cannot be completed. The action will continue without the check. Ensure that the URL is configured correctly in DNS, and that IP addresses associated with the web probe are not configured on any management servers.

Cause

Validating that the web probe does not conflict with IP addresses of the management servers failed. Accessing the web probe server should not be available on the infrastructure tunnel.

Solution

Make sure that any IP addresses associated with the web probe URL are not configured on any management server.

DNS entry cannot be updated

Warning received—A DNS entry for web probe <web_probe_hostname> and IP address <previous_web_probe_IP_address> cannot be updated to IP address <new_web_probe_address>. Update the entry manually.

Cause

Updating the web probe DNS record failed.

Solution

Update the DNS record manually according to the warning message instructions.