Hello Bryant

I believe I solved the problem here!!!

The network guys here didn't help much, they told me everything was fine, no security issue between the two computers in the different networks. But, to tell you the truth, I don’t believe they actually tested any thing.

But, I’ve been testing our application and monitoring it in the last 7 days. We did not have the problem anymore.

Let me tell what I did:

Basically, after testing everything I told you before, I didn’t know what to do anymore. So, I read the Microsoft article once again and notice that he problem could be solved changing the default network library to Named Pipes or Multi-Protocol:

“This error may occur when the server has been set to use Integrated Security and the default network library does not support trusted connections, such as NWLink IPX/SPX, TCP/IP Sockets or Apple Talk. In this case, you will either have to configure the server for Standard or Mixed Security, or change the default network library to Named Pipes or Multi- Protocol, using the SQL Client Configuration Utility”

So, all I did was changing it again, but this time to Named Pipes and the error message still didn’t happen.

Well, I hope this can be helpful.

Thank you for your help and attention.

Best Regards,

Érico Galdino Almeida