What version is SQL Server? There was a cumulative update to SQL Server 2019 recently which caused a lot of problems.
When creating the System DSN, does it work with an IP address as opposed to the hostname, i.e. xxx.xxx.xxx.xxx\SQLEXPRESS Is the SQL Server instance using dynamic ports and it's maybe decided to use a different one? Does it work if you explicitly supply the port number? Does SQL Server Management Studio connect ? Have you restarted the SQL Server box and\or SQL Server services ? -- Alan Bourke alanpbourke (at) fastmail (dot) fm _______________________________________________ Post Messages to: ProFox@leafe.com Subscription Maintenance: https://mail.leafe.com/mailman/listinfo/profox OT-free version of this list: https://mail.leafe.com/mailman/listinfo/profoxtech Searchable Archive: https://leafe.com/archives This message: https://leafe.com/archives/byMID/7f2ae360-21c0-4be2-be01-828aba917...@www.fastmail.com ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.