Web server test failed
If the Deployment assistant cannot communicate with the web server, you will receive an error message.
To confirm web server settings:
1. In the Test step in the Deployment assistant, confirm the Protocol, Host address, and Port settings for the web server.
2. Click Retry.
3. Examine the Web Server Test Results. If the test is:
Successful: the result is Web Server Test Passed.
Unsuccessful: the Deployment assistant could not communicate with the web server on port 80 (HTTP). Make sure that you can access the web server using a web browser from the master machine. If the web server is on a worker machine, make sure the necessary ports are open on the worker machine (see Ports used by FileMaker Server). To try to communicate with the web server again, click Retry.
Still unsuccessful: you can disable web publishing for now so that you can complete the Deployment assistant. To disable web publishing, click Back until you reach the Technologies step, then click No, do not enable web publishing.
4. If the test is successful, click Next to go to the next step.
Click Back to return to the previous step or Cancel to exit the Deployment assistant.
Related topics 
Deploying FileMaker Server