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21 wrz 2023 · There are various causes for connectivity issues in SQL Server. This article series helps you troubleshoot the most common SQL Server connectivity issues and describes the tools and methods you can use for troubleshooting.
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.
20 cze 2023 · If you're troubleshooting connectivity issues from a remote client or troubleshooting linked server queries, run the SQLCHECK tool on all systems involved. Quick checklist for troubleshooting connectivity issues. Note. The following sections help you to quickly check for connectivity issues.
Validate the expected protocols are enabled in SQL Server Configuration Manager and the SQL Server ERRORLOG file (see the following sample). If not, enable them and restart SQL Server. TCP should always be enabled if remote connections are allowed.
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.
13 maj 2007 · Users often see this error message when connection to a SQL Server and don't know where to start to solve the problem. In most forums, people says this is because remote connection is not enabled on the server.
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.
