Home/ Questions/Q 618495
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-13T18:33:07+00:00

Help. I get the exception below when I try to run my service. I

  • 0

Help. I get the exception below when I try to run my service. I tried running the CMD LINE fix netsh http add iplisten ipaddress=127.0.0.1:8439 to fix the problem. Problem is I get an IP address successfully added message but I still get the error below when I run my application. Any idea how I can deal with this please?

An unhandled exception of type ‘System.InvalidOperationException’ occurred in System.ServiceModel.dll

Additional information: A registration already exists for URI ‘http://127.0.0.1:8439/‘.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You’ve probably got multiple endpoints listening on the same address- could tell for sure if you posted your config (or config code). Do you have an address attribute specified for each endpoint with a unique URI (including mex if applicable)?

    • 0