Home/ Questions/Q 8640269
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-12T11:14:20+00:00

I am using ASP.Net 4.0 w/ a C# Web service. This also utilizes a

  • 0

I am using ASP.Net 4.0 w/ a C# Web service. This also utilizes a C# library, which is working fine in development and with other applications (Skype bot and Windows form)

I am using JQuery to communicate via JSON to the web service. In development, this is working fine. In production, it is partly working. I can use some commands, but other commands simply throw this error:

Error: The given key was not present in the dictionary.

I am not certain where to begin with this. I can’t step through code because it only happens in prod. I checked the IIS logs, and every request is getting a 200 status, so it appears it is something inside of the app itself. Any ideas where to start with this?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    The issue was that I was using WebClient to call a URL that required a Login. I setup my app pool w/ my domain creds and then I was able to call the page w/o being prompted for a login.

    Once calling the page, I was able to populate a list and loop through it. The error above was thrown because I was looping through an empty list.

    • 0