When I run the Test-MRSHealth command I get an xml error "Expected MRS diagnostic xml element is missing." on the queue check. No issues on other Mailbox Servers, just one DAG member shows this error. I have restarted the Mailbox Replication Service. The problem persists. Had anyone seen this before. I have provided the output below

get-mailboxserver -identity EX13MB01 | Test-MRSHealth

RunspaceId  : 7a6b2a32-df57-42a5-8239-cecf44
Check       : ServiceCheck
Passed      : True
Message     : The Mailbox Replication Service is running.
Identity    : EX13MB01
IsValid     : True
ObjectState : New

RunspaceId  : 7a6b2a32-df57-42a5-8239-ce6e6cf44
Check       : RPCPingCheck
Passed      : True
Message     : The Microsoft Exchange Mailbox Replication service is responding to a ping. Server version: 15.0.1044.22
              caps:1FFF.
Identity    : EX13MB01
IsValid     : True
ObjectState : New

RunspaceId  : 7a6b2a32-df57-42a5-8239-ce6e6ef44
Check       : MRSProxyPingCheck
Passed      : True
Message     : MRS Proxy on server 'EX13MB01' is responding to a ping.
Identity    : EX13MB01
IsValid     : True
ObjectState : New

Expected MRS diagnostic xml element is missing. XPath:/Components/MailboxReplicationService/DurationSinceLastScan
Xml: <Diagnostics><error>ProcessAccessManager RPC Error 5</error><action>Query registered
processes</action><message>Error 0x5 (Access is denied) from RunProcessCommand
EEInfo: ComputerName: n/a
EEInfo: ProcessID: 9252
EEInfo: Generation Time: 2015-05-28 22:51:17.289
EEInfo: Generating component: 2
EEInfo: Status: 0x00000005
EEInfo: Detection location: 974
EEInfo: Flags: 0
EEInfo: NumberOfParameters: 0
</message></Diagnostics>
    + CategoryInfo          : ReadError: (EX13MB01:ServerIdParameter) [Test-MRSHealth], MRSExpectedDiag...issingEx
   ception
    + FullyQualifiedErrorId : [Server=EX13MB01,RequestId=671d1b-796-4c73-bb3d-6cd46382,TimeStamp=5/28/2015
   10:51:17 PM] [FailureCategory=Cmdlet-MRSExpectedDiagnosticsElementMissingException] ED79DB96,Microsoft.Exchange.Mo
  nitoring.TestMRSHealth
    + PSComputerName        : EX13MB01.domain.local

Hi BTRowdy,

Thank you for your question.

From the error, the MRS diagnostic file is missing on this mailbox server. We could copy the MRS diagnostic file from the other member of DAG to this service from the following path:

/Components/MailboxReplicationService/DurationSinceLastScan

If there are any questions regarding this issue, please be free to let me know.

Best Regard,

Jim