How to fix the Oracle error INS-40421: The installer cannot detect the owner of the existing Oracle Grid Infrastructure home (Grid home).?

In this post, you’ll learn more about the Oracle ErrorINS-40421: The installer cannot detect the owner of the existing Oracle Grid Infrastructure home (Grid home). with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

INS-40421: The installer cannot detect the owner of the existing Oracle Grid Infrastructure home (Grid home).

Reason for the Error INS-40421: The installer cannot detect the owner of the existing Oracle Grid Infrastructure home (Grid home).

Cause: The installer is unable to detect the owner of the existing Grid home. To upgrade the software, you must run the installer as the user owning the Grid home.

How to fix the Error INS-40421: The installer cannot detect the owner of the existing Oracle Grid Infrastructure home (Grid home). ?

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

Action: Run the installer as the user owning the existing Grid home.