We have been working on a SQL Server database with a .NET framework application. A couple weeks ago, we suddenly lost the ability for client workstations to connect to the server. If I turn off Windows Firewall, the connection works fine. Tried
adding SQL Server as exception, tried adding TCP port 1434 and UDP port 1433 .... nothing seems to work. This is not a set up issue. The connectivity was working fine for months; this was a sudden issue when nothing had changed.
Any ideas?
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