SQL Server
A family of Microsoft relational database management and analysis systems for e-commerce, line-of-business, and data warehousing solutions.
14,485 questions
Why did this error occur in Event Viewer at that time when the application was unable to connect to the database?
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Yasantha Ekanayake
0
Reputation points
The configuration information of the performance library 'perf-MSSQL$SQLEXPRESS-sq|ctr14.0.1000.169.dII' for the 'MSSQL$SQLEXPRESS' service does not match the trusted performance library information stored in the registry. The functions in this library will not be treated as trusted.
{count} votes
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Erland Sommarskog 117.2K Reputation points MVP2025-02-13T21:51:50.7233333+00:00 It could be pure coincidence. With the information you have shared, it's hard to tell.
Exactly what error did you get when connection failed? Are there any messages from the SQL Server log from the occasion?
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LiHongMSFT-4306 30,751 Reputation points2025-02-14T02:01:02.4766667+00:00 perf-MSSQL$SQLEXPRESS-sq|ctr14.0.1000.169.dII
Please ensure the version is SQL Server 2017.
Also, check the SQL Server error logs for more details about the application connectivity issue.
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