Issue:

If you receive a ***DATABASE CONNECTION ERROR*** when logging into the application, or when performing a task in the application, there is an issue with your network.

This error means the application cannot connect to the SQL database. 

 - This has nothing to do with the application. It means the network is denying access to the database. 

 - If this is happening intermittently, it means the network is flaky.

Resolution:

Analyze your network, looking for a bad piece of hardware on the network. For example, a bad or intermittent network card on the network can produce a broadcast storm that will effectively bring communication down.