3528216 - Unable to login into Backoffice via SSO after the patch release 2211.28

After the 2211.28 version, some users cannot log in to Backoffice via SSO. 

• In some cases, the exception can be found in the Backend/Kibana like below:
  

  kubernetes.pod_name: backoffice-*****-**** logs.level: ERROR logs.thrown.message: de.hybris.platform.persistence.security.***PasswordEncoder is deprecated and cannot be used anymore! logs. thrown.name: de.hybris.platform.persistence.security.EJBPasswordEncoderDeprecatedException

            
• But in some cases, no exception exists in the Backend/kibana.

Note: As the SAP Official Help doc: Upgrading to 2211.47 mentioned, in the 2211.47 Commerce version, old insecure password encoders are removed from code, and there is no possibility to switch back to the legacy mode. Please make sure upgrade the password encoder from legacy methods to argon2 before upgrading to 2211.47 version. 

• SAP Commerce Cloud 2211.28 to 2211.46
• SAP Commerce 2211.28 to 2211.46

SSO, Security, Password, password hashing algorithms, deprecate, MD5, salted MD5, PBKDF2, PBKDF2 with HMAC-SHA1 salted, plain text, SHA-1, SHA-256, SHA-512, re-hash, customer, employee , KBA , CEC-SCC-PLA-PL , Platform , Problem