Trouble running mailbox search Exchange 2016

When trying to run a mailbox search from ECP or command shell we get the same errors, copied below.  Any idea on what direction to troubleshoot this?

[PS] C:\Windows\system32>New-MailboxSearch

cmdlet New-MailboxSearch at command pipeline position 1
Supply values for the following parameters:
Name: Domain User
The request failed. The underlying connection was closed: An unexpected error occurred on a receive.
    + CategoryInfo          : NotSpecified: (:) [], DataSourceOperationException
    + FullyQualifiedErrorId : [Server=SERVERNAME,RequestId=fda72f95-c890-40d6-8840-de18d3d4e826,TimeStamp=12/19/2017
   5:27:53 PM] [FailureCategory=Cmdlet-DataSourceOperationException] 6C09AFD7
    + PSComputerName        : server.domain.com

[PS] C:\Windows\system32>get-mailboxsearch
The request failed. The underlying connection was closed: An unexpected error occurred on a receive.
    + CategoryInfo          : NotSpecified: (:) [Get-MailboxSearch], DataSourceOperationException
    + FullyQualifiedErrorId : [Server=SERVERNAME,,RequestId=fda72f95-c890-40d6-8840-de18d3d4e826,TimeStamp=12/19/2017
   6:01:18 PM] [FailureCategory=Cmdlet-DataSourceOperationException] 25D67BC1,Microsoft.Exchange.Management.Tasks.Get
  MailboxSearch
    + PSComputerName        : server.domain.com

[PS] C:\Windows\system32>$error[0] | fl -force

writeErrorStream      : True
OriginInfo            : server.domain.com
Exception             : System.Management.Automation.RemoteException: The request failed. The underlying connection
                        was closed: An unexpected error occurred on a receive.
TargetObject          :
CategoryInfo          : NotSpecified: (:) [Get-MailboxSearch], DataSourceOperationException
FullyQualifiedErrorId : [Server=SERVERNAME,,RequestId=5d522559-98e6-4836-9e6e-755633fdb089,TimeStamp=12/19/2017
                        6:04:26 PM] [FailureCategory=Cmdlet-DataSourceOperationException]
                        25D67BC1,Microsoft.Exchange.Management.Tasks.GetMailboxSearch
ErrorDetails          :
InvocationInfo        :
ScriptStackTrace      : at <ScriptBlock><Process>, <No file>: line 41
PipelineIterationInfo : {}
PSMessageDetails      :