IBM Support

"Current Informix Installation Detected" message during installation

Troubleshooting


Problem

The message "Current Informix Installation Detected" is displayed when attempting to install IBM Cognos Express.

Symptom

It is not possible for the installation to continue when a current Informix installation is detected on the system where IBM Cognos Express is being installed.

Cause

1. A separate, standalone version of Informix is installed on the host (or leftovers are found in the Windows registry)

2. IBM Cognos Express has been installed and reinstalled and the Informix registry entries were not removed properly.

3. The Windows user "informix" is present on the host because Informix had been installed on the system in the past.

Resolving The Problem


In order to resolve the issue and be able to proceed with the installation, execute one of the following procedures depending on the cause:

1. If it is verified that a pre-existing Informix instance is already installed on the machine, it will be necessary to uninstall it (the ability to uninstall is normally accessed via an entry in Add/Remove Programs).

2. If Cognos Express has been installed and uninstalled on the machine prior to this installation attempt, use the following procedure to clear leftover registry entries:

From the start menu, run "regedit"

Perform a backup of the registry using File >> Export in case the change will need to be reverted. Ensure you have selected "My Computer" in the tree when doing the backup.

Open a command prompt and run the following commands:

    reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Informix\DBMS /F

    reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Informix\DBMS /F

    reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Informix\Online\cm_ids_svr_custom /F

    reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Informix\SQLHOSTS\cm_ids_svr_custom /F

    reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Informix\SQLHOSTS\cm_ids_svr_custom_drda /F

    reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Informix\Online\cm_ids_svr_custom /F

    reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Informix\SQLHOSTS\cm_ids_svr_custom /F

    reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Informix\SQLHOSTS\cm_ids_svr_custom_drda /F

3. If IDS or any corresponding Informix tools were installed on the machine in the past, check if the user "informix" is still present on the system, by running the following command:
    net user informix

If the user is present, run the following command from a shell:
    net user informix /delete

[{"Product":{"code":"SSDL22","label":"IBM Planning Analytics Express"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Component":"Install and Config","Platform":[{"code":"PF033","label":"Windows"}],"Version":"9.0;9.5","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
10 November 2022

UID

swg21411313

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