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21 wrz 2023 · The following articles provide details for various tools and procedures to troubleshoot different connectivity errors: Configure firewalls to work with SQL Server. Describes how to configure Windows firewall for successful connections to instances. Test connections to SQL Server by using Universal Data Link (UDL) files
11 maj 2023 · Podczas nawiązywania połączenia z wystąpieniem SQL Server może wystąpić co najmniej jeden z następujących komunikatów o błędach. Ten artykuł zawiera kilka kroków ułatwiających rozwiązywanie tych błędów, które są udostępniane w kolejności od prostych do złożonych.
21 mar 2011 · Problem. Sometimes you may have issues connecting to SQL Server and you may get messages such as the following: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible.
11 lip 2024 · When connecting to SQL Server, you may receive the following error message: A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The certificate chain was issued by an authority that is not trusted.) (.Net SqlClient Data Provider)
17 gru 2021 · While setting TrustServerCertificate=True or Encrypt=false in the connection string is a quick fix, the recommended way of solving this issue is to provide a proper certificate for your SQL Server from a trusted CA.
23 mar 2019 · Basically, when you failed to connect to your SQL Server, the issue could be: 1) Network issue, 2) SQL Server configuration issue. 3) Firewall issue, 4) Client driver issue, 5) Application configuration issue. 6) Authentication and logon issue.
17 sty 2018 · Microsoft SQL Server Error 53 looks very much like the Error 40: A network-related or instance-specific error occurred while establishing a connection to SQL Server at first look. Like SQL Server error 40, here also SQL Server client cannot connect to the SQL Server Instance.
