I’ve seen this error a couple of different times. Mostly from other people calling me with the problem. So I still don’t know what ultimately causes the problem. But if you’re having this problem, here’s how you fix it.
First, a bit of background.
You’ll open a dataset you’ve been working with for months and see the following error message:
Unable to find connection [connectionName] (web.config)1 for object ‘Web.config’. The connection string could not be found in application settings, or the data provider associated with the connection string could not be loaded.