I have a winforms app in VB.NET 2008 with a SQL Server 2008 back end on an internal server on our network. There is no firewall on the server as it is not exposed to users outside the network. The software has worked great until this morning. I checked and found that the server had been rebooted due to some 'upgrades' and then it connected to the network again.
The software works perfectly for me, but my two other users get the error in the attached screen shot. I have tried all day to troubleshoot the issue to no avail. I have disabled shared memory, I have disabled named pipes, I have gone back and enabled both. Any ideas?