the underlying connection was closed could not establish trust relationship for the SSL/TLS

[Brij]

Hi,

I am developing POS application C# (VS2010). I am using AIM Card Not Present API and created test account. I have developed test application and worked on development machine but when installing at client machine and processing CC then getting the subject error.

Please guide me.

Thanks in advance.

Brij

[RaynorC1emen7]

try access to the https authorize.net url to install the ssl certificate.

or here some google results/workaround

http://forums.asp.net/p/1174025/1972251.aspx

http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-no...