Random error when using Test-MigrationServerAvailability -Endpoint

Question

Hi all,

I have a random error (only 1 each 5/6 time) when i create my endpoint and test this endpoint with cmdlets Test-MigrationServerAvailability.

When i run Test-MigrationServerAvailability -Endpoint XXXX, i have a Result = Success, and SupportsCutover = False, most of the time, but approximatively 1 each 5 or 6 test, i have a Result = Failed.

I have tested with an Autodiscover enabled Endpoint, and with an Autodisover disabled Endpoint, same result.

I have validate Outlookanywhere and autodiscover with "Exchange Remote Connectivity Analyzer": Succes with no error.

There is a TMG server to publish OutlookAnywhere.

I have check an OutlookAnywhere client connected to Exchange 2013 OnPremise, and i have a lot of failed request (Column Request/Failed in Outlook connexion status).

-> Exchange Directory : 50% failed, Exchange messaging 10% failed.

How can i resolve this problem, before starting the Cutover sync?

The error is :

Message: We weren't able to connect to the remote server. Please verify that the migration endpoint settings are correct and your certificate is valid, and then try again.

ErrorDetail : Microsoft.Exchange.Migration.FailedToDiscoverRpcEndpointTransientException

---> Microsoft.Exchange.Rpc.RpcException: Error 0x6be (The remote procedure call failed) from cli_RfrGetNewDSA

at Microsoft.Exchange.Rpc.ThrowRpcExceptionWithEEInfo(Int32 rpcStatus, String routineName)

at Microsoft.Exchange.Rpc.Rfri.RfriRpcClient.GetNewDSA(String userDN, String& server)

at Microsoft.Exchange.Migration.MigrationNspiClient.<>c__DisplayClass1f.<>c__DisplayClass22.<GetNewDSA>b__1e()

at Microsoft.Exchange.Migration.MigrationNspiClient.RunNspiRfrClientCommand(String debugContext, Func`1 rfriCommand)

at Microsoft.Exchange.Migration.MigrationNspiClient.<>c__DisplayClass1f.<GetNewDSA>b__1d()

at Microsoft.Exchange.Migration.MigrationNspiClient.RunOperation(String debugContext, Action command)

--- End of inner exception stack trace ---

at Microsoft.Exchange.Migration.MigrationNspiClient.GetNewDSA(ExchangeOutlookAnywhereEndpoint endpoint, String user)

at Microsoft.Exchange.Migration.DataAccessLayer.ExchangeOutlookAnywhereEndpoint.GetNspiDataReader(MigrationJob job)

at Microsoft.Exchange.Migration.DataAccessLayer.ExchangeOutlookAnywhereEndpoint.VerifyConnectivity()

at Microsoft.Exchange.Management.Migration.MigrationService.Endpoint.TestMigrationServerAvailability.InternalProcessEndpoint(Boolean fromAutoDiscover)

OnPremise OutlookAnywhere configuration look correct:

Get-****OutlookAnywhereSSLOffloading                      : True

ExternalHostname                   : webmail.DOM.com

InternalHostname                   : webmail.DOM.com

ExternalClientAuthenticationMethod : Ntlm

InternalClientAuthenticationMethod : Ntlm

IISAuthenticationMethods           : {Basic, Ntlm, Negotiate}

XropUrl                            :

ExternalClientsRequireSsl          : True

InternalClientsRequireSsl          : True

Get-AutodiscoverVirtualDirectory

WindowsAuthentication : True

BasicAuthentication   : True

EXBPA return only this error :

Exchange Server: Check if the application pool 'MSExchangeOWAAppPool' runs with the recommended permissions

-> But the permission is correct, "Local System".

Exchange Server: Check server health entry 'ActiveSyncCTPMonitor'

Exchange Server: Check server health entry 'OnPremisesInboundProxyMonitor'

Exchange Server: Check server health entry 'OnPremisesSmtpClientSubmissionMonitor'

Exchange Server: Check server health entry 'ActiveSyncDeepTestMonitor'

Thanks

Answer 1

Hi Tyler,

Thanks for your update in private message. I am so glad you have resolved this issue. I’d like to share the private message here:

“The problem was resolved this morning by the network team, they have change TMG - Exchange route. Now i haven't any error.”

If you have any other questions, please feel free to post a new thread.

Thanks,

Young

Answer 2

Hi Tyler,

From the symptom (failed only 1 each 5/6 time), Office 365 can connect to on-premise Exchange Outlook Anywhere. Based on my experience, this should be a temporarily connection problem, such as on-premise network issue.

1. For the error you posted, is it the error message when you create migration endpoint in Office 365 Exchange Admin Center?
2. About “When i run Test-MigrationServerAvailability -Endpoint XXXX, i have a Result = Success, and SupportsCutover = False”, could you provide the entire test result for analysis?
3. Please also provide a successful test result.
4. Pleae make sure that the on-premises Outlook Anywhere client authentication method is set to Basic authentication.
5. Make sure that the RPC proxy server is correctly set up to use specific ports to communicate with Outlook Anywhere and that the on-premises domain controllers are listening on port 6004.

To protect your privacy, I have sent a private message to request test results. Please click this link to access private message: https://answers.microsoft.com/en-us/privatemessages/list

Thanks,

Young