Hi, same problem for me - HA UCCX 12.5, upgraded to 15. Then backup - restore - due to upgrade OVA. IDS service on primary node is shutdown, same issue in IDS log:
decryptConfig: error decrypting IdS config
ERROR","stacktrace":"com.nimbusds.jose.JOSEException: MAC check failed\n\tat com.nimbusds.jose.crypto.impl.AESCBC.decryptAuthenticated(AESCBC.java:357
ERROR","stacktrace":"com.cisco.ccbu.ids.common.exception.IdSRuntimeException: Failed to decrypt token :MAC check failed.\n\tat com.cisco.ccbu.ids.security.IdSConfigSecurityService.decryptConfig(IdSConfigSecurityService.java:118)
KV