Troubleshooting "http://<hostname>:<port> can't reach this page" error with SAP Web Dispatcher

Question

I am using SAP Web Dispatcher to load balance requests, but when I try to access my service through "http://<hostname>:<port>", I get an error message saying "can't reach this page". What could be causing this error and how can I troubleshoot it?

Answer 1

RDP to <hostname> and open Powershell with the run as administrator option.

Run this to verify that you can connect to the web server.

Invoke-WebRequest http:\\localhost:8888         # replace 8888 with your port number

If you cannot connect, run this command and look for your port number and the program name for "SAP Web Dispatcher". Verify that the program is running and listening on the correct port.

Get-NetTCPConnection -State Listen | Sort-Object LocalPort | Format-table -Property LocalPort,@{L="ProcessName";E={(get-process -id $_.OwningProcess).ProcessName}}

If everything looks ok, then temporarily disable the Windows firewall on the server and from a client PC run this to test connectivity.

Test-NetConnection -ComputerName <hostname> -Port <port>  # use your name and port