Ever reboot your servers and when you login, all looks good on the surface but when you try and do stuff well it doesn’t actually work? In this scenario exactly that. Running coexistence with Exchange 2016 and 2019 and after a reboot, all seemed good. Exchange Management Shell launched fine but the Exchange Admin Center […]
In Exchange, whether it is Exchange 2013 or higher, you may be presented with Event ID 106 complaining that performance counters are missing or already exists etc. Here is one of many errors below: You can re-create the performance counters and it should clear that constant event from logging, here is the script: add-pssnapin Microsoft.Exchange.Management.PowerShell.Setup […]
In Azure, when you build Virtual Machines, you have the option to install Extensions, this may be AntiVirus etc. that you need to only license once you access your VM. What you will notice is that once you do that, you have a few certificates installed on your VM called TenantEncryptionCert. As shown below, my […]
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
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
