I created a new SharePoint web application at port 100. I created a default site collection. When I try to access it from the server machine it opens just fine. When I try to access it from a different machine I get page not found error. Both machines belong to the same network and the same domain. What do I need to set up (in IIS, I guess) to make it work?

Please note that I do have another web application set up at port 80 which opens just fine from both machines.

  • 1
    Did you check the firewalls (on both machines?)
    – Dribbel
    May 11, 2012 at 9:36
  • ^What he said. Yeah, I'd stick to using port numbers above 1023 for additional web applications. Ports below that are well-known ports, and are often in use. See en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
    – Andy Burns
    May 11, 2012 at 10:25
  • @Dribbel Thank you, the firewall was the cause of the problem. Much appreciated
    – Boris
    May 11, 2012 at 11:07

1 Answer 1


You should open up port 100 on the firewall by using Windows Firewall with Advanced Security.

Inbound Rules > Port > Protocol:TCP, Specific Port: 100 > Allow the connection > Apply to all zones > Enter a rule name > Finish.


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