Core unable to communicate with license portal due to missing agent registry key (4038065)

Core unable to communicate with license portal due to missing agent registry key

When attempting to communicate with License portal the Core gives error message failed to connect and in the Rapid Recovery logs the error below is shown.

System.ArgumentNullException: String reference not set to an instance of a String. Parameter name: s Server stack trace: at ServiceHost.InMemoryHosting.InMemoryServiceHost.InvokeServiceMethod[T](String managementService, String method, IEnumerable`1 parameters) at ServiceHost.InMemoryHosting.CrossDomainCall.Call() at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs) at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg)

The agent ProtectionTimestamp is missing in the registry Computer\HKEY_LOCAL_MACHINE\SOFTWARE\AppRecovery\Core\Agents\AGENTID\ProtectionTimeStamp

. In order to fix this follow these steps: 

1. Shutdown Core
2. Open regedit 
3. Remove agent that is missing "ProtectionTimestamp key
4. Start the core services
5. Add agent back into protection

If the affected agent is a replica on a target core do the following:

1. Remove the agent from replication keeping the recovery points on the target core
2. Remove the agent from replication in the source core
3. Stop the target core service
4. Remove agent that is missing "ProtectionTimestamp key
5. Start the target core service
6. Add the agent back to replication.