InterSystems IRIS TSQL Code 18461 Login failed for user ‘%ls’. Reason: Ser

In this post, you’ll learn about the SQL error code 18461 in InterSystems IRIS database the reason why you are receiving the TSQL message when using the InterSystems IRIS data platform

Error Code :

18461

Reason for the Error code 18461 in InterSystems IRIS DBMS

Login failed for user ‘%ls’. Reason: Server is in single user mode. Only one administrator can connect at this time.