The underlying connection was closed: An unexpected error occurred on a receive.

I am getting this error on a logon page which was built on C#/Asp .NET, and it shows this error:

“The underlying connection was closed: An unexpected error occurred on a receive.”

Does any of you know what this is? This is a deployed website. I do not have the the actual back-end c sharp code…just the dll files, web.config files, and aspx files etc.

Windows Server 2008 R2; IIS 7.5; .Net Framework 4.5 and 4.0 for the applications pools.

Please assist if possible?

I’m sorry, but this site is for Windows PowerShell, not general tech support.