LCM cannot talk to the Aria Config server. Tasks fail with LCMVSSC10013

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

• Running any tasks such as Inventory Sync, Replace Certificate or Update Password for Aria Config fail with LCMVSSC10013 
• Tasks fails with an error similar to this:
  Error Code: LCMVSSC10013
Failed to import VMware Aria Automation Config.
Exception occurred while importing VMware Aria Automation Config host. Exception message: Import of VMware Aria Automation Config failed for tenant Standalone vRASSC

com.vmware.vrealize.lcm.vsse.common.exception.VsscImportFailureException: Import of VMware Aria Automation Config failed for tenant Standalone vRASSC
 at com.vmware.vrealize.lcm.vsse.core.task.VsscImportTask.execute(VsscImportTask.java:185)
 at com.vmware.vrealize.lcm.platform.automata.service.Task.retry(Task.java:158)
 at com.vmware.vrealize.lcm.automata.core.TaskThread.run(TaskThread.java:60)
 at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
 at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
 at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: Cannot execute ssh commands. Exception encountered : Session.connect: java.security.spec.InvalidKeySpecException: key spec not recognized
 at com.vmware.vrealize.lcm.util.SshUtils.execute(SshUtils.java:721)
 at com.vmware.vrealize.lcm.util.SshUtils.runCommand(SshUtils.java:532)
 at com.vmware.vrealize.lcm.util.SshUtils.runCommand(SshUtils.java:516)
 at com.vmware.vrealize.lcm.util.SshUtils.runCommand(SshUtils.java:628)
 at com.vmware.vrealize.lcm.vsse.core.task.VsscImportTask.fetchFipsStatus(VsscImportTask.java:342)
 at com.vmware.vrealize.lcm.vsse.core.task.VsscImportTask.getProductDetails(VsscImportTask.java:260)
 at com.vmware.vrealize.lcm.vsse.core.task.VsscImportTask.execute(VsscImportTask.java:158)
 ... 5 more
Caused by: java.lang.RuntimeException: Cannot create session for ssh://root@Aria_Config_Server.example.com
 at com.vmware.vrealize.lcm.util.SessionHolder.newSession(SessionHolder.java:57)
 at com.vmware.vrealize.lcm.util.SessionHolder.<init>(SessionHolder.java:37)
 at com.vmware.vrealize.lcm.util.SshUtils.execute(SshUtils.java:663)
 ... 11 more

Environment

• Aria Suite Lifecycle Manager 8.16.x or higher
• Aria Automation Config 8.16.x or higher

Resolution

Enable FIPS mode in Aria Suite Lifecycle and retry the task

1. Go to Lifecycle Operations -> Settings -> Tips Mode Compliance -> check the enabled box -> Click Update
2. Wait for the services to restart ~3 minutes
3. Retry the request