CAUAJM_W_20373 Unable to set the TLSv1.2 cipher list. The default TLS protocol ciphers will be used instead.

Products

• Autosys Workload Automation

Issue/Introduction

The following warning message is logged in the event_demon log during startup or operation:

 

[08/05/2026 12:55:03]      CAUAJM_W_20373 Unable to set the TLSv1.2 cipher list. The default TLS protocol ciphers will be used instead.
[08/05/2026 12:55:03]      CAUAJM_I_10176 AutoSys Scheduler operational on auxiliary agent HTTPS listener port 11443.
[08/05/2026 12:55:06]      CAUAJM_I_20366 AutoSys Scheduler operational on agent listener port 49172.
[08/05/2026 12:55:06]      CAUAJM_I_20367 AutoSys Scheduler operational on auxiliary agent listener port 7507.

 

Cause

This issue occurs when the SSL/TLS configuration file defines a protocol version for which no valid or compatible ciphers have been configured.

In the $AUTOUSER/sslconfig.$AUTOSERV configuration file, both TLS v1.2 and TLS v1.3 are enabled, but the configured cipher suite only applies to TLS v1.3:

TLSProtocols=TLSv1.2, TLSv1.3
TLSCipherSuites=TLS_AES_128_GCM_SHA256

Because TLS_AES_128_GCM_SHA256 is exclusively a TLS v1.3 cipher suite, it cannot be applied to TLS v1.2. As a result, the scheduler cannot set a custom cipher list for TLS v1.2 and falls back to default TLS protocol ciphers while generating warning CAUAJM_W_20373.

Resolution

To resolve this issue and prevent the warning, configure cipher suites that are compatible with every protocol defined under TLSProtocols.

1. Open the $AUTOUSER/sslconfig.$AUTOSERV configuration file in a text editor.

2. Update the TLSCipherSuites setting to include appropriate ciphers for both TLS v1.2 and TLS v1.3.

   Example Configuration:

   TLSProtocols=TLSv1.2, TLSv1.3
   TLSCipherSuites=TLS_AES_128_GCM_SHA256,ECDHE-RSA-AES128-GCM-SHA256
   

3. Save the changes to $AUTOUSER/sslconfig.$AUTOSERV.

4. Restart the AutoSys Scheduler (event_demon) process for the changes to take effect.

 

Additional Information

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