Exchange 2019 cu12
Author: n | 2025-04-25
Exchange Server 2025 CU12 (2025H1) . Exchange Server 2025 CU12 Nov23SU: .40: Exchange Server 2025 CU12 Oct23SU:
Installation of Exchange 2025 CU12 on Windows
I specified On in this example):.\Setup.exe /IacceptExchangeServerLicenseTerms_DiagnosticDataOn /PrepareADOnce the above completes, we can run the next command to prepare the Schema:.\Setup.exe /IacceptExchangeServerLicenseTerms_DiagnosticDataOn /PrepareSchemaWhen the seconds command has completed, you need to ensure that you wait for Active Directory replication for the changes to take effect. Depending on the environment size, this can be 30 min or longer. Here is an article where I go through the installation as well:Step 2: Installing Exchange 2019Once the AD and schema are prepared, you need to ensure that Exchange 2013 is on a cumulative update (CU) that supports coexistence with Exchange Server 2019. I would recommend updating to the latest cumulative update and security update (SU) before proceeding with the installation of Exchange 2019. If you are on the correct level or have finished updating Exchange 2013, you can now proceed to install the prerequisites for Exchange Server 2019.You need the following software to install Exchange Server 2019 on Windows Server 2022 Core or GUI:Exchange 2019 CU12 or higherExchange 2019 Security update for the CU you installing (Latest)UCMA Runtime (Included in the ISO file for Exchange 2019 CU12 or higher in the UCMARedist Folder)IIS URL RewriteVisual C++ 2012Visual C++ 2013I didn’t include .NET 4.8 as Windows Server 2022 has it by default installed. When you have installed the above prerequisites and rebooted the server, you can proceed with installing Exchange 2019. This can also be done from the command line interface or you can use the Graphical User Interface (GUI). Here is the command. Exchange Server 2025 CU12 (2025H1) . Exchange Server 2025 CU12 Nov23SU: .40: Exchange Server 2025 CU12 Oct23SU: We have 6 server Exchange 2025 CU12 and we have install Exchange CU12 SU2v2 for 3 server . when active DB on Exchange updated CU12 SU2v2 when access owe Exchange 2025 CU12 now has support for Windows 2025 (finally). Support for Windows 2025 is only true for Exchange 2025 CU12, Exchange 2025 is only supported on Issue 1: Certificate Request in Exchange Server 2025 CU12 and Later. Since the .req parameter is not available in Exchange Server 2025 CU12 and later, you should use the Exchange 2025 cu12 Exchange Administrative Center does not load correctly. I uninstalled CU12 with no change. Everything comes out like its text based and none of the There are two more exciting updates for hybrid customers in Exchange Server 2025 CU12. CU12 includes a change to the Exchange Server License Terms. We have updated our licensing to For example, if the lost server had Exchange Server 2025 CU12 installed, you can use Exchange Server 2025 CU12 or CU13 media to recover it. Step 8: Install the latest Exchange Server 2025 CU12 Mar23SU: 14 de marzo de 2025: .26: .026 Exchange Server 2025 CU12 Feb23SU: 14 de febrero de 2025: .25: Share via ECP error.pngWe have MS Exchange 2019 CU12 . All was fine but since two days back we are not able to open ECP or Admin center and getting the error:Server Error in '/ecp' Application.Runtime Error__Description:__ An exception occurred while processing your request. Additionally, another exception occurred while executing the custom error page for the first exception. The request has been terminated.There is no DAG and its a standalone server. No updates or installations done on it in the past two days. Issue started two days ago on Friday . Its running on Windows 2022 DC edition.I have checked eventlogs and could not find anything. We have already migrated to cloud (mailboxes), there are some connectors on this server for on-premise Applications but nothing much is done apart from some troubleshooting and migrating few DL's to cloud. Can anyone assist. (There is an HTTPS error but its there for a while, not related to this)See attachment picture.Comments
I specified On in this example):.\Setup.exe /IacceptExchangeServerLicenseTerms_DiagnosticDataOn /PrepareADOnce the above completes, we can run the next command to prepare the Schema:.\Setup.exe /IacceptExchangeServerLicenseTerms_DiagnosticDataOn /PrepareSchemaWhen the seconds command has completed, you need to ensure that you wait for Active Directory replication for the changes to take effect. Depending on the environment size, this can be 30 min or longer. Here is an article where I go through the installation as well:Step 2: Installing Exchange 2019Once the AD and schema are prepared, you need to ensure that Exchange 2013 is on a cumulative update (CU) that supports coexistence with Exchange Server 2019. I would recommend updating to the latest cumulative update and security update (SU) before proceeding with the installation of Exchange 2019. If you are on the correct level or have finished updating Exchange 2013, you can now proceed to install the prerequisites for Exchange Server 2019.You need the following software to install Exchange Server 2019 on Windows Server 2022 Core or GUI:Exchange 2019 CU12 or higherExchange 2019 Security update for the CU you installing (Latest)UCMA Runtime (Included in the ISO file for Exchange 2019 CU12 or higher in the UCMARedist Folder)IIS URL RewriteVisual C++ 2012Visual C++ 2013I didn’t include .NET 4.8 as Windows Server 2022 has it by default installed. When you have installed the above prerequisites and rebooted the server, you can proceed with installing Exchange 2019. This can also be done from the command line interface or you can use the Graphical User Interface (GUI). Here is the command
2025-04-03Share via ECP error.pngWe have MS Exchange 2019 CU12 . All was fine but since two days back we are not able to open ECP or Admin center and getting the error:Server Error in '/ecp' Application.Runtime Error__Description:__ An exception occurred while processing your request. Additionally, another exception occurred while executing the custom error page for the first exception. The request has been terminated.There is no DAG and its a standalone server. No updates or installations done on it in the past two days. Issue started two days ago on Friday . Its running on Windows 2022 DC edition.I have checked eventlogs and could not find anything. We have already migrated to cloud (mailboxes), there are some connectors on this server for on-premise Applications but nothing much is done apart from some troubleshooting and migrating few DL's to cloud. Can anyone assist. (There is an HTTPS error but its there for a while, not related to this)See attachment picture.
2025-04-04Applies ToExchange Server 2019 Exchange Server 2016 To prevent misuse of UNC paths by attackers, we are removing parameters that take UNC paths as inputs from the Exchange Server PowerShell cmdlets and the Exchange Admin Center. These changes will affect all cumulative update (CU) releases of Microsoft Exchange Server 2019 (CU12 and later) and Microsoft Exchange Server 2016 (CU23 and later). These changes are available in the following latest Exchange Server updates: Cumulative Update 12 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019 Cumulative Update 23 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016 Changes in Exchange Server cmdlets Get-AgentTrafficTypeSubscription TransportService Server Change: The parameter Server that takes the UNC path as input is removed from the cmdlet. This restricts usage to the local server on which the cmdlet is run. Import-ExchangeCertificate FileName "" Password Change: The FileName parameter that takes the UNC path as input is removed from the cmdlet. To import the certificate that's stored in another UNC path, you must use the FileData parameter, as shown in following example: Import-ExchangeCertificate FileData ([Byte[]]$(Get-Content -Path "" -Encoding byte)) Password Export-ExchangeCertificate Thumbprint FileName "" BinaryEncoded Password Change: The FileName parameter that takes the UNC path as input is removed from the cmdlet. To export the certificate to a UNC path, you must use the FileData parameter, as shown in the following example: $cert = Export-ExchangeCertificate Thumbprint Password BinaryEncoded Set-Content -Path "" -Value $cert.FileData -Encoding byte New-ExchangeCertificate GenerateRequest RequestFile "" SubjectName "" DomainName Change: The RequestFile parameter that takes the UNC path as input is removed from the cmdlet. To export the request file to a UNC path, you must use the Set-Content cmdlet, as shown in the following example. $request = New-ExchangeCertificate GenerateRequest SubjectName "" DomainName Set-Content -Path "" -Value $request Get-CalendarDiagnosticLog Identity "Jasen Kozma" Subject "Budget Meeting" ExactMatch $true LogLocation "C:\My Documents\Calendar Diagnostic Export" Change: The LogLocation parameter that takes the UNC path as input is removed from the cmdlet. This restricts the usage to the local server on which the cmdlet is run. Get-CalendarDiagnosticAnalysis LogLocation "C:\My Documents\Calendar Diagnostic Export" OutputAs HTML | Set-Content -Path Change: The LogLocation parameter that takes the UNC path as input is removed from the cmdlet. You must provide Calendar Diagnostic logs through the CalendarLogs parameter, as shown in the following example: $calitems = Get-CalendarDiagnosticLog -Identity -Subject "Budget Meeting" Get-CalendarDiagnosticAnalysis CalendarLogs $calitems OutputAs HTML
2025-04-04Take care of disabling SSL Offloading for Outlook Anywhere.SSL Offloading on Load BalancerSSL Offloading is not supported. Use SSL bridging instead with the same SSL certificate as on Exchange Server IIS front end.Public folders hosted on Exchange Server 2013, 2016 CU22 (or older) or 2019 CU11 (or older)Move all Public folders to currently supported versions, decommission Exchange Server 2013 which is out of support. Check this table for your Public Folder scenario.Modern Hybrid agent is used to publish Exchange Server to the internet in hybrid scenarioIdentify the Exchange Servers which are published via Modern Hybrid agent, by following the steps outlined in this section of documentation.On these servers, run Exchange Server CU14 setup in unattended mode and use the /DoNotEnableEP_FEEWS switch to not enable Extended Protection on the EWS front end virtual directory. Our recommendation for securing the server published by the modern agent can be found here.Please note that CVE 2024-21410 also applies to Exchange Server 2016. For Exchange 2016 servers, follow Configure Windows Extended Protection in Exchange Server if Extended Protection is not already enabled in your organization. We have not released an update for Exchange 2016 today.The KB article that describes the fixes in this release and product downloads is:Exchange Server 2019 Cumulative Update 14 (KB5035606), VLSC Download, DownloadRunning /PrepareSchema is not required unless you are upgrading from CU9 or older. Please see Schema Changes. Running /PrepareAD is required.After installing a CU, always check for and install any available SUs. The Exchange Server Health Checker will also tell you if any additional steps are needed.Outlook clients might fail to connect to the server (repeatedly prompts for credentials) after CU14 is installed in environments that use SSL Offloading on load balancer. If you use SSL Offloading on LB, please note that SSL Offloading is not supported with Extended Protection. SSL Bridging is supported instead, with the same SSL certificate as on Exchange Server IIS front end.CU14 /RecoverServer setup might fail with an error. See "Cannot convert null to type" error and Exchange 2019 CU14 RecoverServer fails. Note that this applies only to /RecoverServer setup and not setup that upgrades from earlier CU to CU14.With the release of Exchange Server 2019 CU14, CU12 is no longer supported and will not receive any future SUs. Please update your servers to the latest CU to continue receiving SUs. As of this writing, the support status of different Exchange versions is as follows:Exchange ServerSupport statusAction to takeExchange 2019 CU13 or CU14SupportedUpdate to latest SUExchange 2019 CU 12 (and earlier)Unsupported (no future SUs)Update to latest CU and latest SUExchange 2016 CU23SupportedUpdate to latest SUExchange 2016 CU22 (and earlier)Unsupported (no future SUs)Update to CU23 and latest SUExchange Server 2019 is now in Extended Support, and as previously announced, we plan to release one more CU for Exchange Server 2019 (2024 H2 CU, aka CU15).Microsoft recommends that all customers test the deployment of an update in a lab environment to determine the proper installation process for their production environment.For installation best practices, see Upgrade Exchange
2025-04-16