How to fix the Oracle error INS-40409: The installer has detected local Cluster Synchronization Services (CSS) configured on this host. Local CSS is running from: string.?

In this post, you’ll learn more about the Oracle ErrorINS-40409: The installer has detected local Cluster Synchronization Services (CSS) configured on this host. Local CSS is running from: string. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

INS-40409: The installer has detected local Cluster Synchronization Services (CSS) configured on this host. Local CSS is running from: string.

Reason for the Error INS-40409: The installer has detected local Cluster Synchronization Services (CSS) configured on this host. Local CSS is running from: string.

Cause: You selected to install and configure an Oracle Grid Infrastructure installation (Oracle Clusterware and Oracle ASM). However, Oracle Clusterware cannot be installed on a server with a configured CSS daemon.

How to fix the Error INS-40409: The installer has detected local Cluster Synchronization Services (CSS) configured on this host. Local CSS is running from: string. ?

You can fix this error in Oracle by following the below steps

Action: Deconfigure and delete the existing local CSS daemon, and then restart the installer.