Getting Error Message: Client Authentication Failed, When Attempting to Login on APEX, Using IDCS / SSO Authentication
(Doc ID 2804410.1)
Last updated on OCTOBER 27, 2023
Applies to:
Oracle Cloud Infrastructure - Database Service - Version N/A and laterAPEX Application Development - Version NA and later
Oracle Application Express (APEX) - Version 21.1 and later
Oracle Database Cloud Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
When attempting to login into an APEX application, the following error occurs:
Client Authentication Failed
Alternatively, depending on configuration, the error message could be:
"You are not authorized to view this application, either because you have not been granted access, or your account has been locked.
Please contact the application administrator."
| ROW | MESSAGE | LEVEL | CALL STACK |
| 1 | HTTP response 401 - Unauthorized | 2 | %WEB_SERVICES.set_response_status_and_hdrs:600 %WEB_SERVICES.make_rest_request_int ... |
| 2 | Body: {"error":"invalid_client","error_description":""client authentication failed.","ecid":"<ecid>"} | 2 | %WEB_SERVICES.make_rest_request: 1367 %WEBSERCIES_API.make_rest_request:608 ... |
| 3 | JSON POST http(s)://idcs-<name>.identity.oraclecloud.com:443:/oauth2/v1/token request got HTTP status 401 | 1 | %AUTHENTICATION_SOCIAL.send_json_request: 99 %AUTHENTICATION_SOCIAL.send_access_token_request ... |
Configuration was made correctly on IDCS side.
Changes
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |