Hi JMonik,
Since this is English Forums, if you have any technical question about SQL Server , you can translate your question in English or your question to your local forum. I move the question to the related forums, it is appropriate and more experts will assist
you.
Base on your error message, we need to verify the following things.
1.You enable the TCP/IP, VIA protocol on the client machine,
2.Your SQL Server is allowed to connect remotely and the firewall allows SQL remote and a Local Connection.
3. Your SQL Server is listening on the port your specified in the connection string, for example, the default port is 1433.
There is a similar issue, you can refer to the following link.
http://social.msdn.microsoft.com/Forums/sqlserver/en-US/8ef535a1-ce6c-483b-b30c-bf19f34a752e/provider-tcp-provider-error-0-no-connection-could-be-made-need-help
About install issue, for more information, see:http://support.microsoft.com/kb/941823/en-us
Thanks,
Sofiya Li
Sofiya Li
TechNet Community Support
