Microsoft SQL Server database ranks third in the relational database, second only to Oracle and MySQL database. when using it, it is inevitable to encounter various problems and warnnings. You may be dba or a developer, I hope this content can help you solve SQL Server error number 18061.

Error number: 18061

Severity level: 20

Event logged: The client was unable to join a session with SPID %d. This error may have been caused by an earlier operation failing or a change in permissions since the session was established. Check the error logs for failed operations immediately before this error message.