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IZE0106E Connect failed with error "Basic Authentication Error" (hostname:portnumber)

Question & Answer


Question

What would cause the following IZE0106E message when I attempt to connect my CICS Explorer V5.3 to my CICS Transaction Server for z/OS (CICS TS) V5.3 region?

IZE0106E Connect failed with error "Basic Authentication Error" (hostname:portnumber)

I see no RACF errors in the logs. This is the error I see: alt text

Answer

The Explorer Service Data showed that the connection type was for a "CICSPlex SM Data Interface" connection instead of a "CMCI" connection. I get the same IZE0106E message if I attempt to use a "CICSPlex SM Data Interface" connection to connect to the CMCI TCPIPSERVICE port using AUTHENTICATE(BASIC).

If you create a "CMCI" connection from the CICS Explorer "Host Connections" view, it should connect successfully.

See the CICS TS documentation topic Setting up CMCI in a CICS region with active security for details.

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Platform":[{"code":"PF035","label":"z\/OS"}],"Component":"CICS Explorer","Version":"","Line of Business":{"code":"LOB70","label":"Z TPS"}}]

Product Synonym

CICS/TS CICSTS CICS TS CICS Transaction Server

Document Information

Modified date:
05 January 2026

UID

dwa1402140

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