Greetings again to the well of knowledge...
OK, I'm really stumped here.
I have an Access 2010 front end that uses SQL Server on a separate server for the back end. Multiple users have their own copy of the front end on their local workstations. Everything has been running swimmingly for the past two years.
Today, no one can get in: Connection error SQL Server Error 5 followed by SQL Server Error 17. Nothing in the way of permissions have changed that I can tell and the security settings within SQL appear to be unchanged.
I copied the Access front end onto the server hosting the SQL instance and ran it there with no errors. Should I be looking at Windows permissions or SQL security settings.
Users can access the server itself natively and can map drivers to it, so I'm baffled.