Re: Download Exchange 2019 Cu 12

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Phyllis Sterlin

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Jul 10, 2024, 1:44:38 AM7/10/24
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How to Download Exchange 2019 CU 12

If you are using Exchange Server 2019, you might want to update it to the latest cumulative update (CU) available. In this article, we will explain what is Exchange 2019 CU 12, why you should install it, and how to download it from two different sources: Microsoft Download Center and Microsoft Update Catalog.

download exchange 2019 cu 12


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What is Exchange 2019 CU 12?

Exchange 2019 CU 12 is the twelfth cumulative update for Exchange Server 2019. It was released on April 20, 2022, and it includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. These fixes will also be included in later cumulative updates for Exchange Server 2019 .

This update also includes new daylight saving time (DST) updates for Exchange Server 2019. For more information about DST, see Daylight Saving Time Help and Support Center.

New features in this cumulative update

To prevent misuse of UNC paths by attackers, parameters that take UNC paths as inputs will no longer be usable in Exchange Server PowerShell cmdlets or the Exchange Admin Center. For more information, see the following Knowledge Base article: 5014278 Changes in Exchange Server PowerShell cmdlets and Exchange Admin Center for UNC path inputs.

Known issues in this cumulative update

There are some known issues that you might encounter after installing this cumulative update. Here are some of them:

    • The Get-MailboxDatabaseCopyStatus cmdlet from an Exchange Server 2013 server fails against databases on Exchange Server 2019 and 2016 servers and returns Error 0xe0434352 from RpccGetCopyStatusEx4. The workaround is to run Get-MailboxDatabaseCopyStatus from an Exchange Server 2019 or 2016 server.
    • Checking the Exchange Server 2019 or 2016 database status from the Exchange admin center (EAC) might fail and return an "HTTP 500" or "Your request couldn't be completed. Please try again in a few minutes" error message. The workaround is to make sure that the admin mailbox is on an Exchange Server 2019 or 2016 server. If the admin account has no mailbox, make sure that all arbitration mailboxes (especially the SystemMailbox bb558c35-97f1-4cb9-8ff7-d53741dc928c) are on an Exchange Server 2019 or 2016 server.
    • The Get-EmailAddressPolicy cmdlet fails and returns "Microsoft.Exchange.Diagnostics.BlockedDeserializeTypeException."
    • "Cannot Send Mail - Your mailbox is full" error when you use iPhone mail to send very large attachments. For more information, see KB 5004622.

    Issues that this cumulative update fixes

    This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles:

      How to download Exchange 2019 CU 12 from Microsoft Download Center

      If you want to download Exchange 2019 CU 12 from Microsoft Download Center, you can follow these steps:

      Prerequisites and system requirements

      Before you download and install Exchange 2019 CU 12, make sure that you meet the following prerequisites and system requirements:

        • You must have Exchange Server 2019 installed on your computer.
        • You must restart your computer after installing the update.

        Installation instructions

        To install Exchange 2019 CU 12 from Microsoft Download Center, follow these steps:

          • Double-click the file to extract the contents to a folder of your choice.
          • Open an elevated command prompt and navigate to the folder where you extracted the files.
          • Run the following command to install the update: Setup.exe /IAcceptExchangeServerLicenseTerms /m:upgrade
          • Wait for the installation to complete and restart your computer if prompted.

          Verification steps

          To verify that you have successfully installed Exchange 2019 CU 12, follow these steps:

            • Open Exchange Management Shell and run the following command: Get-ExchangeServer Format-List Name, Edition, AdminDisplayVersion
            • Check that the AdminDisplayVersion value is 15.2.986.12.
            • Open Exchange Admin Center and check that the build number is 15.02.0986.012.

            How to download Exchange 2019 CU 12 from Microsoft Update Catalog

            If you want to download Exchange 2019 CU 12 from Microsoft Update Catalog, you can follow these steps:

            Prerequisites and system requirements

            The prerequisites and system requirements for downloading Exchange 2019 CU 12 from Microsoft Update Catalog are the same as for downloading it from Microsoft Download Center, except that you also need an internet connection and a web browser that supports Microsoft Update Catalog.

            Installation instructions

            To install Exchange 2019 CU 12 from Microsoft Update Catalog, follow these steps:

              • Save the file to your computer and double-click it to run the installer.
              • Follow the on-screen instructions to complete the installation and restart your computer if prompted.

              Verification steps

              The verification steps for installing Exchange 2019 CU 12 from Microsoft Update Catalog are the same as for installing it from Microsoft Download Center.

              Conclusion

              In this article, we have shown you how to download Exchange 2019 CU 12 from two different sources: Microsoft Download Center and Microsoft Update Catalog. We have also explained what is Exchange 2019 CU 12, why you should install it, and what are the new features, known issues, and fixed issues in this cumulative update. We hope that this article has been helpful and informative for you. If you have any questions or feedback, please feel free to leave a comment below.

              FAQs

              Here are some frequently asked questions about Exchange 2019 CU 12:

                • Q: How do I uninstall Exchange 2019 CU 12?
                • A: You cannot uninstall Exchange 2019 CU 12 or any other cumulative update for Exchange Server 2019. The only way to revert to an earlier version of Exchange Server 2019 is to restore your server from a backup that was taken before you installed the cumulative update.
                • Q: How do I update multiple Exchange servers in my organization?
                • A: You can use the following best practices to update multiple Exchange servers in your organization:
                  • Update your servers in the following order: edge transport servers, mailbox servers, and then any other servers in your organization.
                  • Update all your servers within the same Active Directory site before moving to another site.
                  • Update all your servers within the same DAG before moving to another DAG.
                  • Update all your servers that host the same role before moving to another role.
                  • Use a load balancer or a DNS round robin to redirect client traffic away from the server that you are updating.
                  • Test the functionality of your server after updating it before moving to another server.
                  • Q: How do I check for new updates for Exchange Server 2019?
                  • A: You can check for new updates for Exchange Server 2019 by using one of the following methods:
                    • Use Windows Update or Microsoft Update to automatically download and install the latest cumulative update for Exchange Server 2019.
                    • Q: How do I troubleshoot any issues that might occur after installing Exchange 2019 CU 12?
                    • A: If you encounter any issues after installing Exchange 2019 CU 12, you can try the following troubleshooting steps:
                      • Check the Exchange Setup log files for any errors or warnings. The log files are located in the %ExchangeInstallPath%\Logging\Setup folder.
                      • Check the Windows Application event log for any events related to Exchange Server or the cumulative update.
                      • Run the Test-ServiceHealth cmdlet in Exchange Management Shell to check the status of the Exchange services.
                      • Run the Test-ExchangeServerHealth.ps1 script in Exchange Management Shell to check the health and performance of your Exchange server. For more information, see Test-ExchangeServerHealth.ps1.
                      • Contact Microsoft Support for further assistance.
                      • Q: Where can I find more information about Exchange 2019 CU 12?
                      • A: You can find more information about Exchange 2019 CU 12 by visiting the following resources:

                        I hope that this article has answered all your questions about how to download Exchange 2019 CU 12. If you have any feedback or suggestions, please let me know in the comments section below. Thank you for reading and have a great day!

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