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Head over to my page on Experts Exchange to view the article in detail: https://www.experts-exchange.com/articles/33593/Installing-Exchange-2016-and-Exchange-2019-into-the-same-environment.html Advertisements Advertisements

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If you are an Admin that likes to test things like me then you tend to find small things. For example, in this exercise I was trying to install the Exchange 2019 Management tools on a Windows 2016 Server and while the error is straight forward, if you click the link it takes you to […]

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As an Exchange Admin, you are aware that Exchange relies on DNS. In your environment, ensure that your PTR records are updating correctly or you might end up with false positives as shown below: As you can see, the first 2 errors that stand out are that the Active Directory server cannot be reached, even […]

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As an Exchange Admin, the last thing you want is a DAG that is not functioning correctly. A client recently experienced a problem whereby they were trying to add another copy to a DAG and after a short period of time the following events were logged in the System Log before the seeding of the […]

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Running the command Get-MailboxDatabaseCopyStatus * on an Exchange 2010 Server that has Exchange 2016 in the environment, returns all the database copies for every version but today Exchange 2010 gave a weird error: A server-side administrative operation has failed. Operation failed with message: Error 0xe0434f4d (Unknown error …. This is what you get in the […]

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Networking and Exchange, well this can cause issues upon issues and log events you might have not seen before. For example, on a customer server, the following 3x event ID’s were logged every 10-15 minutes: 2501 2601 2604 Here are screenshots of each error: From the server, you can ping the network, other servers can […]

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Moving mailboxes in Exchange is relatively a painless task, but when you run into issues like space or network problems then all the moves you started all begin to fail. Here is an example of a DAG going down and all the moves failing with the following error: Error: Move for mailbox ‘mailbox1’ is stalled […]

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Creating new mailbox stores should be straight forward, right? Strange one encountered in my lab yesterday, created about 7 stores and the 8th one created but the Master was pointing to the server itself and not to the DAG. Try mounting a store in this state and you get the following error: Initially I thought […]

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Adding a member to a DAG should be simple? Right? Well it can go very wrong as well. Unique error that we encountered. The first DAG set went through fine and all stores mounted etc. however on the second pair, the server would install Failover Cluster or so it seemed and then the GUI or […]

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Any Exchange Admins worst nightmare is when you reboot your Exchange server and the Information Store Service won’t start. There can be many factors why this can happen and the event logs will also give you details of why it failed, but in this scenario the failure was not what was expected. When checking the […]

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