Informix Error -41000

-41000 Error in reading the [INET_CONNECTION] section of the INFORMIX.INI file.

Check the [INET_CONNECTION] section of the INFORMIX.INI file to make sure this section has the following section heading:

[INET_CONNECTION]

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-41000 fires when the legacy IBM Informix NET for Windows client can't read the [INET_CONNECTION] section of INFORMIX.INI — per the official guidance.

The INFORMIX.INI file missing the [INET_CONNECTION] section heading, per the official guidance — the direct, only cause.

Solutions / Resolution

Confirm the [INET_CONNECTION] section heading is present in INFORMIX.INI, per the official guidance, exactly as [INET_CONNECTION].

Examples

The required section heading

[INET_CONNECTION]
host=myserver
user=myuser
protocol=tcpip

Diagnostic Checks

Open INFORMIX.INI and confirm the [INET_CONNECTION] heading is present and correctly spelled, adding it if missing.

Related Errors / Related Topics

-41001 — "The INFORMIX.INI file does not have a hostname or has a format error." A related INFORMIX.INI [INET_CONNECTION] configuration error, on a missing/malformed host name rather than the section heading itself.
-41002 — "The INFORMIX.INI file does not have a username or has a format error." A related INFORMIX.INI [INET_CONNECTION] configuration error, on a missing/malformed user name.
-41004 — "The INFORMIX.INI file does not have a protocolname or has a format error." A related INFORMIX.INI [INET_CONNECTION] configuration error, on a missing/malformed protocol name.

The [INET_CONNECTION] section heading is missing from INFORMIX.INI — add it.