Protocol is not supported Error in IMAP While Configuring OAuth in EBS Workflow

When configuring OAuth for the EBS workflow application, you may encounter the following error message in IMAP:

Cause:

The error is triggered due to missing or incorrect protocol settings in the WebLogic Server configuration. By default, some WebLogic instances may not be set to use the required HTTP handler or TLS protocol version, leading to connectivity issues.

Solution:

1) Add -DUseSunHttpHandler=true -Dhttps.protocols=TLSv1.2 to the Server Start arguments for all OACORE servers and ADMIN server.

2) Restart the OACORE services.

Note: Not required to add parameters on DMZ environment.