Turning Exchange 2013/2016/2019 Out Of Maintenance Mode

This process has been applied successfully in an Exchange 2016 production environment.

Below is the process to take out the Exchange Server from the Maintenance Mode.

1. Run the below command to take out the Exchange Server from the Maintenance Mode

[PS] C:\>Set-ServerComponentState “EXCH002” -Component ServerWideOffline -State Active -Requester Maintenance

2. Resume the Cluster Node

[PS] C:\>Resume-ClusterNode -Name “EXCH002”

Name         ID    State

—-               —    —–

EXCH002        1     Up

3. Run the DatabaseCopyAutoActivationPolicy

[PS] C:\>Set-MailboxServer “EXCH002” -DatabaseCopyAutoActivationPolicy Unrestricted

4. Run the DatabaseCopyActivationDisabledAndMoveNow command to activate the Database Replication for the node.

[PS] C:\>Set-MailboxServer “EXCH002” -DatabaseCopyActivationDisabledAndMoveNow $false

5. Allow the HubTransport role to accept messages.

[PS] C:\>Set-ServerComponentState “EXCH002” -Component HubTransport -State Active -Requester Maintenance

6. Run the command to verify that the node is UP.

[PS] C:\>Get-ClusterNode “EXCH002”

7. Run the below command to verify all the nodes are up in the cluster.

[PS] C:\>Get-ClusterNode

8. Test the health status of the Exchange Server Node

[PS] C:\>Test-ServiceHealth “EXCH002”

Role                    : Mailbox Server Role

RequiredServicesRunning : True

ServicesRunning         : {IISAdmin, MSExchangeADTopology, MSExchangeDelivery, MSExchangeIS, MSExchangeMailboxAssistants, MSExchangeRepl, MSExchangeRPC, MSExchangeServiceHost,

MSExchangeSubmission, MSExchangeThrottling, MSExchangeTransportLogSearch, W3Svc, WinRM}

ServicesNotRunning      : {}

Role                    : Client Access Server Role

RequiredServicesRunning : True

ServicesRunning         : {IISAdmin, MSExchangeADTopology, MSExchangeMailboxReplication, MSExchangeRPC, MSExchangeServiceHost, W3Svc, WinRM}

ServicesNotRunning      : {}

Role                    : Unified Messaging Server Role

RequiredServicesRunning : True

ServicesRunning         : {IISAdmin, MSExchangeADTopology, MSExchangeServiceHost, MSExchangeUM, W3Svc, WinRM}

ServicesNotRunning      : {}

Role                    : Hub Transport Server Role

RequiredServicesRunning : True

ServicesRunning         : {IISAdmin, MSExchangeADTopology, MSExchangeEdgeSync, MSExchangeServiceHost, MSExchangeTransport, MSExchangeTransportLogSearch, W3Svc, WinRM}

ServicesNotRunning      : {}

9. Test the health status of all the Exchange Server in the DAG.

[PS] C:\>Get-ExchangeServer | Test-ServiceHealth

10. Test the MAPI connectivity on the node, which is upgraded.

[PS] C:\>Test-MAPIConnectivity -Server “EXCH002”

MailboxServer      Database           Result    Error

————-      ——–           ——    —–

EXCH002               DB1                Success

EXCH002               DB2                Success

EXCH002               DB3                Success

EXCH002               DB4                Success

EXCH002               DB5                Success

11. Test the MAPI connectivity on all the Exchange nodes.

[PS] C:\>Get-ExchangeServer | Test-MAPIConnectivity

12. Check the database copy status on the upgraded node.

[PS] C:\>Get-MailboxDatabaseCopyStatus -Server “EXCH002” | Sort Name | Select Name, Status, Contentindexstate

Name      Status  ContentIndexState

—-      ——  —————–

DB1\EXCH002 Mounted            Healthy

DB2\EX02 Mounted            Healthy

DB3\EXCH002 Mounted            Healthy

DB4\EX02 Mounted            Healthy

DB5\EXCH002 Mounted            Healthy

13. Check the database copy status on all the Exchange Nodes

[PS] C:\>Get-MailboxDatabaseCopyStatus * | Sort Name | Select Name, Status, Contentindexstate

14. Test the Replication Health Status

[PS] C:\>Get-DatabaseAvailabilityGroup | Select -ExpandProperty:Servers | Test-ReplicationHealth | Sort Name

15. Verify the DatabaseCopyAutoActivationPolicy is Unrestricted on the upgraded node.

[PS] C:\>Get-MailboxServer “EXCH002” | Select Name, DatabaseCopyAutoActivationPolicy

Name         DatabaseCopyAutoActivationPolicy

—-         ——————————–

EXCH002                             Unrestricted

16. Verify the DatabaseCopyAutoActivationPolicy is Unrestricted on all the Exchange nodes.

[PS] C:\>Get-MailboxServer | Select Name, DatabaseCopyAutoActivationPolicy

17. Rebalance Database distribution across the DAG Members

[PS] C:\Windows\system32>cd $exscripts

[PS] C:\Program Files\Microsoft\Exchange Server\V15\scripts>.\RedistributeActiveDatabases.ps1 –DagName “DAG001” –Balance DbsByActivationPreference -SkipMoveSuppressionChecks