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Missing bindings in IIS (net.tcp, net.pipe, net.msmq, msmq.formatname)

IIS uses site bindings to redirect traffic to corresponding web applications. Site bindings depend on listener adapters. The most common listener adapters (site binding types) are http, https, and ftp.

In some cases, you may want to use uncommon listener adapters such as net.tcp, net.pipe, net.msmq, and msmq.formatname. If you configure IIS correctly, you should see all of these adapters in the “Add Site Binding” window:

IIS site binding types

What if you don’t see some of the binding types in this list? Follow the steps below to troubleshoot and solve this missing bindings issue.

Solution for missing bindings in IIS

If IIS doesn’t show one or more of these bindings (net.tcp, net.pipe, net.msmq, msmq.formatname), follow the steps below.

  • Make sure that these protocols are defined in the “Advanced Settings” of the website (Reference)
Adding missing bindings
  • Make sure the features below are installed
WCF services to install for fixing missing bindings issue
  • The services below should be running
Services related to the missing bindings
  • Your application pool should use Integrated pipeline
  • Close IIS Manager, reset IIS, and open IIS Manager again
  • Check the listenerAdapters section in the applicationHost.config file ( Located in C:\Windows\System32\inetsrv\config\). If you don’t see those listener adapters you want to use in bindings, add them manually
Missing bindings in applicationHost.config

Are you looking for a way to enable Assembly Binding? Check this post out: How to enable Assembly Binding Logging debugging .NET applications?

Ned Sahin

Blogger for 20 years. Former Microsoft Engineer. Author of six books. I love creating helpful content and sharing with the world. Reach me out for any questions or feedback.
Categories IIS

3 thoughts on “Missing bindings in IIS (net.tcp, net.pipe, net.msmq, msmq.formatname)”

  1. Dear.
    “Could not load file or assembly ‘ChilkatDotNet4’ or one of its dependencies. An attempt was made to load a program with an incorrect format. ”
    I need help you…


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