I am getting this error when trying to connect to a SQL DB on only one PC

[DBNETLIB][ConnectionOpen (connect().]SQL Server does not exist or access denied.
 I set the firewall inbound rules for TCP and UDP on port 1433-1434
The ODBC settings "System DSN" client configuration is set for TCP/IP only.
I am not sure why this is the only PC not able to connect to the database but i cant find the reason for it.

Thank you for your time.
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Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Are you using ODBC?
Can you ping the server from that PC by name and IP?
The inbound connections in the local firewall on this PC does not matter. All connections are initiated by the client, and hence outgoing.
mspencer100Author Commented:
Yes i can ping by name and by IP. I also have the same port for outgoing. Yes the APP tech cant seem to figure out why its not connecting either and he has settings in the ODBC admin tool.
Deepak ChauhanSQL Server DBACommented:
Did you try connecting by IP. Is name is successfully resolved?
The rule No. 1 says: If something is wrong with 1 PC out of many then reinstall this one PC. It is the most cost effective solution.

Of course, if you have time to play with various settings,  inspect the firewall, search and update registry, check DLL versions, read event logs, and finally replace some hardware parts to avoid HW problems then nothing against it.

Does the problem happen for all users logging on the problematic PC?

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Vitor MontalvãoMSSQL Senior EngineerCommented:
Did you test the connection from the ODBC?
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Microsoft SQL Server 2005

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