How to Update CU23 on Exchange 2016 via PowerShell

Phase 1 : Backup OWA files from Exchange Program files (D:\)

* backup OWA files (custom interface webmail)

* if your exchange environment doesn’t have custom OWA interface, Please Skip Phase 1

1.Backup whole OWA files from D:\Exchange\FrontEnd\HttpProxy\owa  and save to different device

Phase 2 : Enable Maintenance Mode

* Used Exchange Powershell as admin to run command

* Disable Local firewall and Antivirus for temporary

* Check current log in Event Viewer before Start

1. Snapshot/ backup Exchange server

2. Open Exchange powershell and check current version of CU

Get-ExchangeServer | Format-List Name, Edition, AdminDisplayVersion

3. To Set HubTransport to draining state

Set-ServerComponentState -Identity “EXCH01” -Component HubTransport -State Draining -Requester Maintenance

4. To redirect the queued message to server > EXCH01 (DAG)

Redirect-Message -Server EXCH02 -Target “EXCH01” – cannot use

or

Suspend-ClusterNode “EXCH01”

5. To disable database copy auto-activation and move the active copy of the database to another DAG member

Set-MailboxServer “EXCH01” -DatabaseCopyActivationDisabledAndMoveNow $true

6. To block the DatabaseCopyAutoActivationPolicy

Set-MailboxServer “EXCH01” -DatabaseCopyAutoActivationPolicy Blocked

7. To Enable Maintenance Mode

Set-ServerComponentState “EXCH01” -Component ServerWideOffline -State Inactive -Requester Maintenance

8. To check Maintenance Mode Status :

Get-ServerComponentState “EXCH01” | Select Component, State

Phase 3 : Install Remote Tools Administration Pack

* Login to Current Hosted AD Server

* Open Powershell as admin

1. Install Remote Tools Administration Pack

Install-WindowsFeature RSAT-ADDS

2. Restart Server

Phase 4 : Prepare Schema, AD, and Domains

* Open Powershell as administrator

1. Mount ISO and identify path. (let say : L:\)

cd L

L:\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataOff /PrepareSchema

L:\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataOff /PrepareAD

L:\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataOff /PrepareAllDomains

or

L:\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataOff /PrepareDomain

_____________________________________________________________

NOTE: Starting from September 2021 CU, you need to use the

/IAcceptExchangeLicenseterms_DiagnosticDataOFF

or

/IAcceptExchangeLicenseterms_DiagnosticData_ON

for unattended installs.

Restart the server in between to clear any pending reboots.

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Phase 5 : Install Cumulative Updates via Unattended Setup (Unattended Setup)

* Open Powershell as administrator

* Make sure the installation ISO was Mounted

1. Need to End task at task manager :

– SMEX_Master (5236)

– SMEX_SystemWatcher (3828)

2. Install patch Module before run the installation.

– KB2999226

– IIS URL Rewrite Module 2

3. Start run the installation via command prompt

L:\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataOFF /Mode:Upgrade

4. Let the installation complete. (it will takes several hour )

Phase 6 :  Exit Maintenance Mode :

* Used Exchange Powershell as admin to run command

Set-ServerComponentState “EXCH01” –Component ServerWideOffline –State Active –Requester Maintenance

Set-ServerComponentState EXCH01 –Component HubTransport –State Active –Requester Maintenance

Resume-ClusterNode –Name EXCH01

Set-MailboxServer EXCH01 –DatabaseCopyAutoActivationPolicy Unrestricted

Set-MailboxServer EXCH01 –DatabaseCopyActivationDisabledAndMoveNow $false

Set-ServerComponentState “EXCH01” –Component ServerWideOffline –State Active –Requester Maintenance

Set-ServerComponentState EXCH01 –Component HubTransport –State Active –Requester Maintenance

Get-ClusterNode “EXCH01”

Get-ServerComponentState “EXCH01” | Select Component, State

Phase 7 : Restore OWA files into Exchange files

* Skip this Phase if not performed on phase 1

1. Enter files D:\Exchange\FrontEnd\HttpProxy\owa
2. Copy file name (from backup files) as below and Replace into current folder
3. Global.asax
4. Web.config
5. Web.config.bak

• Enter files D:\Exchange\FrontEnd\HttpProxy\owa\auth
• Copy file name (from backup files) as below and Replace into current folder
• Copy all files inside 15.1.2176 and replaceinto 15.1.2507
• Copy all files inside “Current” and replace into “Current”
• Copy all aspx, aspx_old and htm files and replace into same current location
• Complete. And clear browser history and access webmail link

Figure 1The files inside 15.1.2176 and Current folders

Final : Upgrade Completed

1. Check Event viewer Logs . try to resolve if have any error log
2. Repeat Same step to EXCH02 and EXCH03 (need replace Server name)