When running SDK Custom Agents and after the Agent Keys rollover the Policy Server, many Custom Agents fail to validate the SMSESSION cookies.
They report error:
17344 04/01/19 17:11:03 Start-Authentication-xxxxx: userName=Name Surname, userOsDomain=, userLdapDn=uid=xxxxx,ou=people,dc=myuserstore,dc=com
17344 04/01/19 17:11:03 environment variable not enabled
17344 04/01/19 17:11:05 Authentication-xxxxx: Failure. Error message is: Validation failed. Failed to decode token due to an failure (SM_AGENTAPI_FAILURE)
There's an undocumented known issue where Policy Server could generate a null character in the key value and as such the Custom Agent cannot use the key correctly.
SDK Agent 12
Compile the SDK Agent with SDK 12.52SP1CR01 or higher to have this fix. The workaround is to manually roll the Agent Keys with the AdminUI.