See MS Support: https://learn.microsoft.com/en-US/troubleshoot/sql/database-engine/connect/resolve-connectivity-errors-overview
Can't connect to SQL Server Mamagment studio v18.12
TITLE: Connect to Server
Cannot connect to GEORGEHP\MSSQLSERVER01.
ADDITIONAL INFORMATION:
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. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1)
3 answers
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Bjoern Peters 8,876 Reputation points
2023-01-09T18:33:31.04+00:00 Hi @Georgilvanov-9945
you should tell us a little bit more about your problem... or post a screenshot...
That error is more of "common" one and nothing special...
Where is your SQL Server?
Is TCP enable?
Which user do you try?
Has that user the right permission?
Is there a firewall in between?
A Typo?As Olaf already stated... a good start would be that troubleshooting assistant.
I hope my answer is helpful to you,
Your
Bjoern PetersIf the reply was helpful, please upvote and/or accept it as an answer, as this helps others in the community with similar questions. Thanks!
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LiHongMSFT-4306 27,026 Reputation points
2023-01-10T05:45:03.333+00:00 Hi @Georgi Ivanov This article provides some steps to help you troubleshoot this error, which are provided in order of the issues from simple to complex.
You can also refer to this article which include some steps to isolate the issue. SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified
Best regards, LiHong
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