Exchange 2016 Installation-- Error Code 4027

Question

Exchange 2016 Installation-- Error Code 4027

Kevin 25

I am attempting to install Exchange 2016 on a Windows Server 2016 (new install). This is NOT in a VM. The purpose is to upgrade to 2019 from 2010.

I am getting the following error:

Log Name:      Application

Source:        MSExchange ADAccess

Date:          4/30/2023 7:24:28 PM

Event ID:      4027

Task Category: General

Level:         Error

Keywords:      Classic

User:          N/A

Computer:      ex.mydomain.com

Description:

Process ExSetupUI.exe (PID=5264). WCF request (Get Servers for mydomain.com) to the Microsoft Exchange Active Directory Topology service on server (TopologyClientTcpEndpoint (localhost)) failed. Make sure that the service is running. In addition, make sure that the network ports that are used by Microsoft Exchange Active Directory Topology service are not blocked by a firewall. The WCF call was retried 3 time(s). Error Details 

 System.ServiceModel.EndpointNotFoundException: Could not connect to net.tcp://localhost:890/Microsoft.Exchange.Directory.TopologyService. The connection attempt lasted for a time span of 00:00:02.0468804. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:890.  ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:890

   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)

   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)

   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)

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



Server stack trace: 

   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)

   at System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri, TimeSpan timeout)

   at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout)

   at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)

   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

   at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)

   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)



Exception rethrown at [0]: 

   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)

   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)

   at System.ServiceModel.ICommunicationObject.Open()

   at Microsoft.Exchange.Net.ServiceProxyPool`1.GetClient(Int32 retry, Boolean& doNotReturnProxyAfterRetry, Boolean useCache)

   at Microsoft.Exchange.Net.ServiceProxyPool`1.TryCallServiceWithRetry(Action`1 action, String debugMessage, WCFConnectionStateTuple proxyToUse, Int32 numberOfRetries, Boolean doNotReturnProxyOnSuccess, Exception& exception)

Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

  <System>

    <Provider Name="MSExchange ADAccess" />

    <EventID Qualifiers="49156">4027</EventID>

    <Level>2</Level>

    <Task>1</Task>

    <Keywords>0x80000000000000</Keywords>

    <TimeCreated SystemTime="2023-04-30T23:24:28.754863000Z" />

    <EventRecordID>3109</EventRecordID>

    <Channel>Application</Channel>

    <Computer>ex.mydomain.com</Computer>

    <Security />

  </System>

  <EventData>

    <Data>ExSetupUI.exe</Data>

    <Data>5264</Data>

    <Data>Get Servers for mydomain.com</Data>

    <Data>TopologyClientTcpEndpoint (localhost)</Data>

    <Data>3</Data>

    <Data>System.ServiceModel.EndpointNotFoundException: Could not connect to net.tcp://localhost:890/Microsoft.Exchange.Directory.TopologyService. The connection attempt lasted for a time span of 00:00:02.0468804. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:890.  ---&gt; System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:890

   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)

   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)

   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)

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



Server stack trace: 

   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)

   at System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri, TimeSpan timeout)

   at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout)

   at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)

   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

   at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)

   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)



Exception rethrown at [0]: 

   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)

   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&amp; msgData, Int32 type)

   at System.ServiceModel.ICommunicationObject.Open()

   at Microsoft.Exchange.Net.ServiceProxyPool`1.GetClient(Int32 retry, Boolean&amp; doNotReturnProxyAfterRetry, Boolean useCache)

   at Microsoft.Exchange.Net.ServiceProxyPool`1.TryCallServiceWithRetry(Action`1 action, String debugMessage, WCFConnectionStateTuple proxyToUse, Int32 numberOfRetries, Boolean doNotReturnProxyOnSuccess, Exception&amp; exception)</Data>

  </EventData>

</Event>

I have inbound and outbound rules for port 890 in the firewall (Windows) on the new and old exchange servers, as well as on both domain controllers.
IPv6 is enabled on all servers
When I ping the domain from the Exchange server to be I get a response using both IPv4 and IPv6. Both DC's are also pingable as is the new Exchange server
Net.TCP Port Sharing is set to automatic and started on all servers
DNS has been flushed on new Exchange server.
All dcdiag test pass including DNS

Once Exchange 2016 is up and running correctly, the 2010 will be removed before upgrading 2016. Once 2019 is up and running correctly 2016 will be removed.

I just remove two 2008 DC's. All reference to these two servers have been removed. Both were removed by running dcpromo. Once both 2008 DCs were remove scheme was updated/upgraded to 2016.

Anybody have any ideas?

3 answers

Your answer

Answer 1

Aholic Liang-MSFT 13,891 Microsoft External Staff

Hi @ Kevin,

In order to better identify the issue, I would like to confirm the following points with you:

1. Do both old and new servers have this error?

2. Are there other related errors in Event Viewer?

3. Are all ports open between DC and Exchange?

In addition, for testing purposes, I recommend that you could temporarily disable the firewall to see if you can successfully install Exchange 2016.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Kevin 25

1. No, this error only occurs on the new server (2016 Server, Exchange 2016)

2. I do not know if it is related or not but I also get the error below:

Log Name:      Application
Source:        MSExchange ADAccess
Date:          5/1/2023 8:04:32 PM
Event ID:      4027
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      ex.kevinwatkins.us
Description:
Process ExSetupUI.exe (PID=3088). WCF request (Get Servers for kevinwatkins.us) to the Microsoft Exchange Active Directory Topology service on server (TopologyClientTcpEndpoint (localhost)) failed. Make sure that the service is running. In addition, make sure that the network ports that are used by Microsoft Exchange Active Directory Topology service are not blocked by a firewall. The WCF call was retried 3 time(s). Error Details 
 System.ServiceModel.EndpointNotFoundException: Could not connect to net.tcp://localhost:890/Microsoft.Exchange.Directory.TopologyService. The connection attempt lasted for a time span of 00:00:02.0469011. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:890.  ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:890
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   --- End of inner exception stack trace ---

Server stack trace: 
   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   at System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout)
   at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at System.ServiceModel.ICommunicationObject.Open()
   at Microsoft.Exchange.Net.ServiceProxyPool`1.GetClient(Int32 retry, Boolean& doNotReturnProxyAfterRetry, Boolean useCache)
   at Microsoft.Exchange.Net.ServiceProxyPool`1.TryCallServiceWithRetry(Action`1 action, String debugMessage, WCFConnectionStateTuple proxyToUse, Int32 numberOfRetries, Boolean doNotReturnProxyOnSuccess, Exception& exception)
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="MSExchange ADAccess" />
    <EventID Qualifiers="49156">4027</EventID>
    <Level>2</Level>
    <Task>1</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2023-05-02T00:04:32.580885100Z" />
    <EventRecordID>3170</EventRecordID>
    <Channel>Application</Channel>
    <Computer>ex.kevinwatkins.us</Computer>
    <Security />
  </System>
  <EventData>
    <Data>ExSetupUI.exe</Data>
    <Data>3088</Data>
    <Data>Get Servers for kevinwatkins.us</Data>
    <Data>TopologyClientTcpEndpoint (localhost)</Data>
    <Data>3</Data>
    <Data>System.ServiceModel.EndpointNotFoundException: Could not connect to net.tcp://localhost:890/Microsoft.Exchange.Directory.TopologyService. The connection attempt lasted for a time span of 00:00:02.0469011. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:890.  ---&gt; System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:890
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   --- End of inner exception stack trace ---

Server stack trace: 
   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   at System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout)
   at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&amp; msgData, Int32 type)
   at System.ServiceModel.ICommunicationObject.Open()
   at Microsoft.Exchange.Net.ServiceProxyPool`1.GetClient(Int32 retry, Boolean&amp; doNotReturnProxyAfterRetry, Boolean useCache)
   at Microsoft.Exchange.Net.ServiceProxyPool`1.TryCallServiceWithRetry(Action`1 action, String debugMessage, WCFConnectionStateTuple proxyToUse, Int32 numberOfRetries, Boolean doNotReturnProxyOnSuccess, Exception&amp; exception)</Data>
  </EventData>
</Event>

The 4027 error occurs multiple times during one installation attempt

3. I do not have a rule in the firewall to allow all ports. However, I have attempted the installation of Exchange 2016 with the firewall disabled on all four servers.

I have tried disabling the firewall, even before I added rules to allow port 890 (both UDP and TCP). I added the rules even when the firewall was disabled in the event that the firewall was still blocking it somehow.

Kevin 25 Reputation points

2023-05-02T23:05:57.62+00:00

Again I do not know if it is related to the 4027 error, however the installation eventually fails. I get the error in the image below when it does.
Kevin 25 Reputation points

2023-05-05T16:57:03.91+00:00

@Aholic Liang-MSFT any update?

Answer 2

Amit Singh 5,306

Check this thread for more insight - https://learn.microsoft.com/en-us/answers/questions/367794/error-during-exchange-2019-installation-(id-1002-4

Kevin 25 Reputation points

2023-05-03T00:27:53.0866667+00:00

The potential solutions in the link provided did not resolve the issue

Answer 3

Aholic Liang-MSFT 13,891 Microsoft External Staff

Hi @ Kevin，

Based on the installation error you provided, it appears that there is an attempt to find a mailbox database that does not exist.

For further troubleshooting, I recommend that you run the following command in EMS to check whether there is a system mailbox without an associated database:

Get-Mailbox –Arbitration | ft Name, ServerName, Database –Auto

If it exists, please open Active Directory Users and Computers, locate the user, and remove it.

For more information about this error, please refer to this link:Error Solved: "Exchange 2016 database is mandatory on usermailbox" - TechNet Articles - United States (English) - TechNet Wiki (microsoft.com)

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Kevin 25 Reputation points

2023-05-10T22:49:33.65+00:00

I get the errors in the image below
Aholic Liang-MSFT 13,891 Reputation points Microsoft External Staff

2023-05-12T10:03:40.9966667+00:00

Hi,

Please refer to this link to re-create these three system mailboxes in Exchange 2010：

Recreate missing arbitration mailboxes | Microsoft Learn

Alternatively, you can refer to Repopulate the homeMDB parameters for the three system mailboxes with valid homeMDB values from normal user mailboxes.

Then install Exchange 2016 again to see if it changes.

Kevin 25

Currently get the error below:

Error:
The following error was generated when "$error.Clear(); 
          if ($RoleIsDatacenter -ne $true -and $RoleIsDatacenterDedicated -ne $true)
          {
          if (Test-ExchangeServersWriteAccess -DomainController $RoleDomainController -ErrorAction SilentlyContinue)
          {
          $sysMbx = $null;
          $name = "SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c}";
          $dispName = "Microsoft Exchange";
          Write-ExchangeSetupLog -Info ("Retrieving mailboxes with Name=$name.");
          $mbxs = @(Get-Mailbox -Arbitration -Filter {name -eq $name} -IgnoreDefaultScope -ResultSize 1 );
          if ($mbxs.Length -eq 0)
          {
          Write-ExchangeSetupLog -Info ("Retrieving mailbox databases on Server=$RoleFqdnOrName.");
          $dbs = @(Get-MailboxDatabase -Server:$RoleFqdnOrName -DomainController $RoleDomainController);
          if ($dbs.Length -ne 0)
          {
          Write-ExchangeSetupLog -Info ("Retrieving users with Name=$name.");
          $arbUsers = @(Get-User -Filter {name -eq $name} -IgnoreDefaultScope -ResultSize 1);
          if ($arbUsers.Length -ne 0)
          {
          Write-ExchangeSetupLog -Info ("Enabling mailbox $name.");
          $sysMbx = Enable-Mailbox -Arbitration -Identity $arbUsers[0] -DisplayName $dispName -database $dbs[0].Identity;
          }
          }
          }
          else
          {
          if ($mbxs[0].DisplayName -ne $dispName )
          {
          Write-ExchangeSetupLog -Info ("Setting DisplayName=$dispName.");
          Set-Mailbox -Arbitration -Identity $mbxs[0] -DisplayName $dispName -Force;
          }
          $sysMbx = $mbxs[0];
          }

          # Set the Organization Capabilities needed for this mailbox
          if ($sysMbx -ne $null)
          {
          # We need 1 GB for uploading large OAB files to the organization mailbox
          Write-ExchangeSetupLog -Info ("Setting mailbox properties.");
          set-mailbox -Arbitration -identity $sysMbx -UMGrammar:$true -OABGen:$true -GMGen:$true -ClientExtensions:$true -MailRouting:$true -MessageTracking:$true -PstProvider:$true -MaxSendSize 1GB -Force;

          Write-ExchangeSetupLog -Info ("Configuring offline address book(s) for this mailbox");
          Get-OfflineAddressBook | where {$_.ExchangeVersion.CompareTo([Microsoft.Exchange.Data.ExchangeObjectVersion]::Exchange2012) -ge 0 -and $_.GeneratingMailbox -eq $null} | Set-OfflineAddressBook -GeneratingMailbox $sysMbx.Identity;
          }
          else
          {
          Write-ExchangeSetupLog -Info ("Cannot find arbitration mailbox with name=$name.");
          }
          }
          else
          {
          Write-ExchangeSetupLog -Info "Skipping creating E15 System Mailbox because of insufficient permission."
          }
          }
        " was run: "Microsoft.Exchange.Data.DataValidationException: Database is mandatory on UserMailbox.".

Error:
The following error was generated when "$error.Clear(); 
          if ($RoleIsDatacenter -ne $true -and $RoleIsDatacenterDedicated -ne $true)
          {
          if (Test-ExchangeServersWriteAccess -DomainController $RoleDomainController -ErrorAction SilentlyContinue)
          {
          $sysMbx = $null;
          $name = "SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c}";
          $dispName = "Microsoft Exchange";
          Write-ExchangeSetupLog -Info ("Retrieving mailboxes with Name=$name.");
          $mbxs = @(Get-Mailbox -Arbitration -Filter {name -eq $name} -IgnoreDefaultScope -ResultSize 1 );
          if ($mbxs.Length -eq 0)
          {
          Write-ExchangeSetupLog -Info ("Retrieving mailbox databases on Server=$RoleFqdnOrName.");
          $dbs = @(Get-MailboxDatabase -Server:$RoleFqdnOrName -DomainController $RoleDomainController);
          if ($dbs.Length -ne 0)
          {
          Write-ExchangeSetupLog -Info ("Retrieving users with Name=$name.");
          $arbUsers = @(Get-User -Filter {name -eq $name} -IgnoreDefaultScope -ResultSize 1);
          if ($arbUsers.Length -ne 0)
          {
          Write-ExchangeSetupLog -Info ("Enabling mailbox $name.");
          $sysMbx = Enable-Mailbox -Arbitration -Identity $arbUsers[0] -DisplayName $dispName -database $dbs[0].Identity;
          }
          }
          }
          else
          {
          if ($mbxs[0].DisplayName -ne $dispName )
          {
          Write-ExchangeSetupLog -Info ("Setting DisplayName=$dispName.");
          Set-Mailbox -Arbitration -Identity $mbxs[0] -DisplayName $dispName -Force;
          }
          $sysMbx = $mbxs[0];
          }

          # Set the Organization Capabilities needed for this mailbox
          if ($sysMbx -ne $null)
          {
          # We need 1 GB for uploading large OAB files to the organization mailbox
          Write-ExchangeSetupLog -Info ("Setting mailbox properties.");
          set-mailbox -Arbitration -identity $sysMbx -UMGrammar:$true -OABGen:$true -GMGen:$true -ClientExtensions:$true -MailRouting:$true -MessageTracking:$true -PstProvider:$true -MaxSendSize 1GB -Force;

          Write-ExchangeSetupLog -Info ("Configuring offline address book(s) for this mailbox");
          Get-OfflineAddressBook | where {$_.ExchangeVersion.CompareTo([Microsoft.Exchange.Data.ExchangeObjectVersion]::Exchange2012) -ge 0 -and $_.GeneratingMailbox -eq $null} | Set-OfflineAddressBook -GeneratingMailbox $sysMbx.Identity;
          }
          else
          {
          Write-ExchangeSetupLog -Info ("Cannot find arbitration mailbox with name=$name.");
          }
          }
          else
          {
          Write-ExchangeSetupLog -Info "Skipping creating E15 System Mailbox because of insufficient permission."
          }
          }
        " was run: "Microsoft.Exchange.Data.DataValidationException: Database is mandatory on UserMailbox.
   at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception, ErrorCategory errorCategory, Object target, String helpUrl)
   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target, Boolean reThrow)
   at Microsoft.Exchange.Configuration.Tasks.DataAccessTask`1.Validate(TDataObject dataObject)
   at Microsoft.Exchange.Configuration.Tasks.SetTaskBase`1.InternalValidate()
   at Microsoft.Exchange.Configuration.Tasks.SetRecipientObjectTask`3.InternalValidate()
   at Microsoft.Exchange.Management.Common.SetMailEnabledRecipientObjectTask`3.InternalValidate()
   at Microsoft.Exchange.Management.RecipientTasks.SetUserBase`3.InternalValidate()
   at Microsoft.Exchange.Management.RecipientTasks.SetMailboxBase`3.InternalValidate()
   at Microsoft.Exchange.Management.RecipientTasks.SetMailbox.InternalValidate()
   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__91_1()
   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".

Kevin 25 Reputation points

2023-05-13T04:41:34.5966667+00:00

The following is in the ExchangeSetup log:

[05/15/2023 06:12:43.0646] [1] [ERROR] Database is mandatory on UserMailbox.

[05/15/2023 06:12:43.0646] [1] [ERROR-REFERENCE] Id=SystemAttendantDependent___1DEE95834DBA48F2BB211C2FB6765A5A Component=EXCHANGE14:\Current\Release\Client Access\Unified Messaging
Aholic Liang-MSFT 13,891 Reputation points Microsoft External Staff

2023-05-16T09:17:35.9833333+00:00
Hi,

Just want to confirm if you re-create the above three system mailboxes in the old server?

Do you run this command again and the results are normal?

Get-Mailbox –Arbitration | ft Name, ServerName, Database –Auto
Aholic Liang-MSFT 13,891 Reputation points Microsoft External Staff

2023-05-29T08:18:26.69+00:00

Hi @ Kevin，

It has been a few days and I am checking in to see how things are going on with this issue. Do you perhaps have any further concerns or questions?

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Exchange 2016 Installation-- Error Code 4027

3 answers

Your answer