![]() Read more in the article Install Exchange Server prerequisites. In our example, we will download and recover Exchange Server EX01-2019 with the latest available Exchange Server 2019 Cumulative Update. We can either run setup /m:upgrade /IAcceptEchangeServerLicenseTerms or wait for the next Cumulative Update release and perform the upgrade which will correct this. Once the upgrade is successful, AdminDisplayVersion in Exchange Management Shell or msExchVersion attribute on the recovered server will show the old build number and this is cosmetic in nature. Suppose you do not have the installation media for the Cumulative Update (CU) version that was installed on the server to be recovered, you can recover a server using the latest available Cumulative Update. You can use an unofficial website to download an older Exchange Server ISO file. Microsoft does remove older Exchange CUs when newer versions are released. Scroll down to the Exchange Server that you need. The page will show you the Exchange Server build numbers and release dates. Go to the following page to get a list of the Exchange Server versions. The internal IP address is 192.168.1.52 and joined to the domain exoip.local. ![]() In our example, we configured Windows server 2019 with the name EX01-2019. For example, you can’t recover a failed Exchange 2016 server that was running Windows 2012 R2 on a new server that’s running Windows 2016, or vice-versa. Note: The target server must use the same version of Windows Server as the failed server. Configure static IP address with the same IP address as the old one.Configure computer name with the same name as the old one.Download and install the latest Windows Updates.Install Windows Serverīuild a new Windows Server or deploy one from a template. Right-click the computer account and click on Reset Account. Find the Exchange Server computer account. Start Active Directory Users and Computers (ADUC). Important: Do NOT DELETE the computer account but RESET the computer account. It allows the recovery process to retrieve all configuration data from Active Directory for the failed Exchange Server.We will be able to rejoin the new server to Active Directory under the old computer name.Reset the Active Directory computer account for the failed Exchange Server. The information shown here makes it easier to understand what’s currently running. If the Exchange Server is offline and you can’t start it up, you can proceed further. That’s the Exchange Server that we like to recover. Check current situationĮxchange Server 2019 is running in the organization with computer name EX01-2019. Let’s look at how to recover a standalone Exchange server step by step. An Exchange recovery does not get your mailbox data back. Important: Configure a backup for Exchange Server. ![]() What if you have an Exchange Server which is a DAG member and failed? The approach is different, and you can follow Recover Exchange DAG member server. If one Exchange Server fails, the mail flow in the environment keeps on going until you repair or rebuild the broken Exchange Server. Note: One of the big reasons you want to configure an Exchange DAG is for High Availability. It means that when one Exchange Server is offline, the mailboxes will not switchover to another server. There are different reasons why you want to recover Exchange Server:Ī standalone Exchange Server is a server that is not a member of a DAG. In our example, we have 1x Exchange Server 2019 (EX01-2019) running in the organization that we like to rebuild. What to do now? In this case, it’s best to recover Exchange Server. The Exchange Server is attacked, or it’s not starting anymore.
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