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I was using a program on PHP that connected and read an SQL Server database. All of a sudden it stopped working presenting the following message :
The client cannot establish connection because an error was encountered during pre-logon handshakes. Common causes include the client’s attempt to connect to an unsupported version of SQL Server, the server too busy to accept new connections or a resource limitation (memory or maximum allowed connections) on the server.
Some information to clarify :
1-I can connect the database via Dbeaver from the machine itself that the PHP program has stopped working
2-From another machine I can connect this same bank with the same PHP program
3-This same machine connects another client’s SQL Server database
That is, the same program connects the same database but from another machine and the same machine can connect another SQL database.
What can it be?
Initially it would check if they are all with the updated version...
– MagicHat
In principle everything is updated so much that from the same machine access another bank and the bank can be accessed by another machine. I would add that access to that bank via VPN
– João Abussamra Neto